diff --git a/.idea/misc.xml b/.idea/misc.xml
index 47f1a4e1d4..2db9aab721 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -4,7 +4,7 @@
     <asm skipDebug="false" skipFrames="false" skipCode="false" expandFrames="false" />
     <groovy codeStyle="LEGACY" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="JDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="SuppressionsComponent">
diff --git a/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketData.java b/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketData.java
index d72eb438cb..f86afcf64e 100644
--- a/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketData.java
+++ b/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketData.java
@@ -8,6 +8,8 @@ public class WebSocketData<T> implements Serializable {
 
     private int msgType;
 
+    private String sn;
+
     private T t;
 
     public long getSeq() {
@@ -26,6 +28,14 @@ public class WebSocketData<T> implements Serializable {
         this.msgType = msgType;
     }
 
+    public String getSn() {
+        return sn;
+    }
+
+    public void setSn(String sn) {
+        this.sn = sn;
+    }
+
     public T getT() {
         return t;
     }
diff --git a/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketManager.java b/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketManager.java
index bcafbca657..5cd489872b 100644
--- a/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketManager.java
+++ b/foudations/mogo-base-websocket-sdk/src/main/java/com/mogo/base/websocket/WebSocketManager.java
@@ -114,6 +114,7 @@ public class WebSocketManager implements IMogoWebSocketManager, ISocketMsgSettin
             WebSocketData webSocketData = new WebSocketData();
             webSocketData.setSeq(System.currentTimeMillis());
             webSocketData.setMsgType(listener.getUpLinkType().getMsgType());
+            webSocketData.setSn(Utils.getSn());
             webSocketData.setT(body);
             handlerThread.sendMsg(new Gson().toJson(webSocketData));
         }