diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/util/Types.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/util/Types.kt
index bfb9a59956..f83166512e 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/util/Types.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/util/Types.kt
@@ -21,4 +21,6 @@ import java.lang.reflect.ParameterizedType
 
 typealias JsonDict = Map<String, @JvmSuppressWildcards Any>
 
+val emptyJsonDict = emptyMap<String, Any>()
+
 internal val JSON_DICT_PARAMETERIZED_TYPE: ParameterizedType = Types.newParameterizedType(Map::class.java, String::class.java, Any::class.java)
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MoshiProvider.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MoshiProvider.kt
index d8db462f7c..96cdf29226 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MoshiProvider.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MoshiProvider.kt
@@ -20,10 +20,11 @@ import com.squareup.moshi.Moshi
 import im.vector.matrix.android.api.session.room.model.message.*
 import im.vector.matrix.android.internal.network.parsing.RuntimeJsonAdapterFactory
 import im.vector.matrix.android.internal.network.parsing.UriMoshiAdapter
-import im.vector.matrix.android.internal.session.sync.model.UserAccountData
-import im.vector.matrix.android.internal.session.sync.model.UserAccountDataDirectMessages
-import im.vector.matrix.android.internal.session.sync.model.UserAccountDataFallback
-import im.vector.matrix.android.internal.session.sync.model.UserAccountDataPushRules
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountData
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataDirectMessages
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataFallback
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataIgnoredUsers
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataPushRules
 
 object MoshiProvider {
 
@@ -31,6 +32,7 @@ object MoshiProvider {
             .add(UriMoshiAdapter())
             .add(RuntimeJsonAdapterFactory.of(UserAccountData::class.java, "type", UserAccountDataFallback::class.java)
                     .registerSubtype(UserAccountDataDirectMessages::class.java, UserAccountData.TYPE_DIRECT_MESSAGES)
+                    .registerSubtype(UserAccountDataIgnoredUsers::class.java, UserAccountData.TYPE_IGNORED_USER_LIST)
                     .registerSubtype(UserAccountDataPushRules::class.java, UserAccountData.TYPE_PUSH_RULES)
             )
             .add(RuntimeJsonAdapterFactory.of(MessageContent::class.java, "msgtype", MessageDefaultContent::class.java)
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
index 10e9001cc2..97fa269b9f 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt
@@ -27,6 +27,10 @@ import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.session.pushers.SavePushRulesTask
 import im.vector.matrix.android.internal.session.room.membership.RoomMembers
 import im.vector.matrix.android.internal.session.sync.model.*
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataDirectMessages
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataFallback
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataPushRules
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataSync
 import im.vector.matrix.android.internal.session.user.accountdata.DirectChatsHelper
 import im.vector.matrix.android.internal.session.user.accountdata.UpdateUserAccountDataTask
 import im.vector.matrix.android.internal.task.TaskExecutor
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/SyncResponse.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/SyncResponse.kt
index d084dcdadd..9e5cc2cfa4 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/SyncResponse.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/SyncResponse.kt
@@ -18,6 +18,7 @@ package im.vector.matrix.android.internal.session.sync.model
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataSync
 
 // SyncResponse represents the request response for server sync v2.
 @JsonClass(generateAdapter = true)
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/IgnoredUsersContent.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/IgnoredUsersContent.kt
new file mode 100644
index 0000000000..c61c122ffe
--- /dev/null
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/IgnoredUsersContent.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.sync.model.accountdata
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+import im.vector.matrix.android.api.util.JsonDict
+
+@JsonClass(generateAdapter = true)
+internal data class IgnoredUsersContent(
+        /**
+         * Required. The map of users to ignore. UserId -> empty object for future enhancement
+         */
+        @Json(name = "ignored_users") val ignoredUsers: Map<String, JsonDict>
+)
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountData.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountData.kt
similarity index 81%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountData.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountData.kt
index 2173d2f4df..55dbad6099 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountData.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountData.kt
@@ -14,9 +14,13 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.internal.session.sync.model
+package im.vector.matrix.android.internal.session.sync.model.accountdata
 
-internal interface UserAccountData {
+import com.squareup.moshi.Json
+
+internal abstract class UserAccountData {
+
+    @Json(name = "type") abstract val type: String
 
     companion object {
         const val TYPE_IGNORED_USER_LIST = "m.ignored_user_list"
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataDirectMessages.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataDirectMessages.kt
similarity index 82%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataDirectMessages.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataDirectMessages.kt
index 825a16cb1e..e5c6135bd1 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataDirectMessages.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataDirectMessages.kt
@@ -14,12 +14,13 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.internal.session.sync.model
+package im.vector.matrix.android.internal.session.sync.model.accountdata
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
 
 @JsonClass(generateAdapter = true)
 internal data class UserAccountDataDirectMessages(
+        @Json(name = "type") override val type: String = TYPE_DIRECT_MESSAGES,
         @Json(name = "content") val content: Map<String, List<String>>
-) : UserAccountData
+) : UserAccountData()
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataFallback.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataFallback.kt
similarity index 84%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataFallback.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataFallback.kt
index 99196bcaa2..a8b8235d37 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataFallback.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataFallback.kt
@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.internal.session.sync.model
+package im.vector.matrix.android.internal.session.sync.model.accountdata
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
 
 @JsonClass(generateAdapter = true)
 internal data class UserAccountDataFallback(
-        @Json(name = "type") val type: String,
+        @Json(name = "type") override val type: String,
         @Json(name = "content") val content: Map<String, Any>
-) : UserAccountData
+) : UserAccountData()
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataIgnoredUsers.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataIgnoredUsers.kt
new file mode 100644
index 0000000000..f6d60b278b
--- /dev/null
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataIgnoredUsers.kt
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.sync.model.accountdata
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+import im.vector.matrix.android.api.util.emptyJsonDict
+
+@JsonClass(generateAdapter = true)
+internal data class UserAccountDataIgnoredUsers(
+        @Json(name = "type") override val type: String = TYPE_IGNORED_USER_LIST,
+        @Json(name = "content") val content: IgnoredUsersContent
+) : UserAccountData() {
+
+
+    companion object {
+        fun createWithUserIds(userIds: List<String>): UserAccountDataIgnoredUsers {
+            return UserAccountDataIgnoredUsers(
+                    content = IgnoredUsersContent(
+                            ignoredUsers = userIds.associateWith { emptyJsonDict }
+                    )
+            )
+        }
+    }
+}
+
+
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataPushRules.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataPushRules.kt
similarity index 83%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataPushRules.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataPushRules.kt
index 7f357c876b..0d549d1667 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataPushRules.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataPushRules.kt
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.internal.session.sync.model
+package im.vector.matrix.android.internal.session.sync.model.accountdata
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
@@ -22,5 +22,6 @@ import im.vector.matrix.android.api.pushrules.rest.GetPushRulesResponse
 
 @JsonClass(generateAdapter = true)
 internal data class UserAccountDataPushRules(
+        @Json(name = "type") override val type: String = TYPE_PUSH_RULES,
         @Json(name = "content") val content: GetPushRulesResponse
-) : UserAccountData
+) : UserAccountData()
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataSync.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataSync.kt
similarity index 91%
rename from matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataSync.kt
rename to matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataSync.kt
index 4b9e9d652d..c7f8bfa4c2 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/UserAccountDataSync.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataSync.kt
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.internal.session.sync.model
+package im.vector.matrix.android.internal.session.sync.model.accountdata
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateUserAccountDataTask.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateUserAccountDataTask.kt
index 5c0dac1125..1327ca7410 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateUserAccountDataTask.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateUserAccountDataTask.kt
@@ -18,7 +18,7 @@ package im.vector.matrix.android.internal.session.user.accountdata
 
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.network.executeRequest
-import im.vector.matrix.android.internal.session.sync.model.UserAccountData
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountData
 import im.vector.matrix.android.internal.task.Task
 import javax.inject.Inject