public dynamic AddService(string domain, int service_id) { Require.Argument("domain", domain); Require.Argument("service_id", service_id); var request = new RestRequest(Method.POST) { RequestFormat = DataFormat.Json, Resource = "domains/{domain}/applied_services" }; request.AddUrlSegment("domain", domain); dynamic payload = new ExpandoObject(); payload.service = new { id = service_id }; request.AddBody(payload); return Execute<dynamic>(request); }