better json parsing and response handling

src/BirdsiteLive.ActivityPub/Models/Activity.cs

@@ -6,7 +6,7 @@ namespace BirdsiteLive.ActivityPub
     public class Activity
     {
         [JsonProperty("@context")]
-        public string context { get; set; }
+        public object context { get; set; }
         public string id { get; set; }
         public string type { get; set; }
         public string actor { get; set; }

src/BirdsiteLive.Domain/UserService.cs

@@ -115,7 +115,7 @@ namespace BirdsiteLive.Domain
                 }
             };
             var result = await _activityPubService.PostDataAsync(acceptFollow, followerHost, activity.apObject);
-            return result == HttpStatusCode.Accepted;
+            return result == HttpStatusCode.Accepted || result == HttpStatusCode.OK;
         }
 
         private string OnlyKeepRoute(string inbox, string host)
@@ -159,7 +159,7 @@ namespace BirdsiteLive.Domain
                 }
             };
             var result = await _activityPubService.PostDataAsync(acceptFollow, followerHost, activity.apObject.apObject);
-            return result == HttpStatusCode.Accepted;
+            return result == HttpStatusCode.Accepted || result == HttpStatusCode.OK;
         }
 
         private async Task<SignatureValidationResult> ValidateSignature(string actor, string rawSig, string method, string path, string queryString, Dictionary<string, string> requestHeaders, string body)

src/BirdsiteLive.Pipeline/Processors/SubTasks/SendTweetsToSharedInboxTask.cs

@@ -51,7 +51,7 @@ namespace BirdsiteLive.Pipeline.Processors.SubTasks
                     var result =
                         await _activityPubService.PostNewNoteActivity(note, user.Acct, tweet.Id.ToString(), host, inbox);
 
-                    if (result == HttpStatusCode.Accepted)
+                    if (result == HttpStatusCode.Accepted || result == HttpStatusCode.OK)
                         syncStatus = tweet.Id;
                     else
                         throw new Exception("Posting new note activity failed");