diff --git a/src/Plugins/BotSharp.Plugin.Membase/Interfaces/IMembaseApi.cs b/src/Plugins/BotSharp.Plugin.Membase/Interfaces/IMembaseApi.cs
index f210c86d9..86a5e4875 100644
--- a/src/Plugins/BotSharp.Plugin.Membase/Interfaces/IMembaseApi.cs
+++ b/src/Plugins/BotSharp.Plugin.Membase/Interfaces/IMembaseApi.cs
@@ -60,6 +60,6 @@ public interface IMembaseApi
     Task<PgtValidationResponse> ValidatePgtDefinitionAsync(string graphId, string definitionId, [Body] PgtValidationRequest request);
 
     [Post("/graph/{graphId}/pgt-external/{correlationId}/complete")]
-    Task<PgtExternalCompleteResponse> CompletePgtExternalAsync(string graphId, string correlationId);
+    Task<PgtExternalCompleteResponse> CompletePgtExternalAsync(string graphId, string correlationId, [FromBody] object emptyBody);
     #endregion
 }
diff --git a/src/Plugins/BotSharp.Plugin.Membase/Models/Responses/PgtExternalCompleteResponse.cs b/src/Plugins/BotSharp.Plugin.Membase/Models/Responses/PgtExternalCompleteResponse.cs
index d1f513be8..dc47fe428 100644
--- a/src/Plugins/BotSharp.Plugin.Membase/Models/Responses/PgtExternalCompleteResponse.cs
+++ b/src/Plugins/BotSharp.Plugin.Membase/Models/Responses/PgtExternalCompleteResponse.cs
@@ -28,15 +28,9 @@ public class PgtExternalTask
 
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public object? Error { get; set; }
-
-    public DateTime CreatedAt { get; set; }
-    public DateTime UpdatedAt { get; set; }
-
-    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public DateTime? CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
     public DateTime? CompletedAt { get; set; }
 
     public long NotBefore { get; set; }
-
-    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public DateTime? ClaimedAt { get; set; }
 }