public Message AddMessageForThread(string threadId, MessageFrame frame, string content) { var request = new RestRequest("messages/new", Method.POST); request.AddHeader("Authorization", string.Format("Bearer {0}", _token)); request.AddParameter("thread_id", threadId); request.AddParameter("frame", frame.ToString()); request.AddParameter("content", content); var response = _client.Execute <Message>(request); CheckResponse(response); return(response.Data); }