广点通次留

@@ -236,6 +236,9 @@ public class GDT2019ServiceImpl extends UnionServiceImpl implements IUnionServic
         if (type == 1) {
             //次日留存 START_APP 用户激活后第二天打开APP的行为
             action.put("action_type", "START_APP");
+            JSONObject actionParam = new JSONObject();
+            actionParam.put("length_of_stay",1);
+            action.put("action_param", actionParam);
         }
         actions.add(action);
         params.put("actions", actions);