Merge branch 'pre-release-v3.8.4' into cherry-pick-b7f8813

pkg/apistruct/manage.go

@@ -111,6 +111,21 @@ type BatchSendMsgResp struct {
 	FailedIDs []string `json:"failedUserIDs"`
 }
 
+// SendSingleMsgReq defines the structure for sending a message to multiple recipients.
+type SendSingleMsgReq struct {
+	// groupMsg should appoint sendID
+	SendID          string                 `json:"sendID"`
+	Content         string                 `json:"content" binding:"required"`
+	OfflinePushInfo *sdkws.OfflinePushInfo `json:"offlinePushInfo"`
+	Ex              string                 `json:"ex"`
+}
+
+type KeyMsgData struct {
+	SendID  string `json:"sendID"`
+	RecvID  string `json:"recvID"`
+	GroupID string `json:"groupID"`
+}
+
 // SingleReturnResult encapsulates the result of a single message send attempt.
 type SingleReturnResult struct {
 	// ServerMsgID is the message identifier on the server-side.