diff --git a/internal/msggateway/message_handler.go b/internal/msggateway/message_handler.go
index 8e3512238..bdf14a1a8 100644
--- a/internal/msggateway/message_handler.go
+++ b/internal/msggateway/message_handler.go
@@ -39,7 +39,13 @@ type Req struct {
 }
 
 func (r *Req) String() string {
-	return utils.StructToJsonString(r)
+	var tReq Req
+	tReq.ReqIdentifier = r.ReqIdentifier
+	tReq.Token = r.Token
+	tReq.SendID = r.SendID
+	tReq.OperationID = r.OperationID
+	tReq.MsgIncr = r.MsgIncr
+	return utils.StructToJsonString(tReq)
 }
 
 type Resp struct {
@@ -52,6 +58,12 @@ type Resp struct {
 }
 
 func (r *Resp) String() string {
+	var tResp Resp
+	tResp.ReqIdentifier = r.ReqIdentifier
+	tResp.MsgIncr = r.MsgIncr
+	tResp.OperationID = r.OperationID
+	tResp.ErrCode = r.ErrCode
+	tResp.ErrMsg = r.ErrMsg
 	return utils.StructToJsonString(r)
 }