update pay data format

assets/Scene/Script/Lobby.js

@@ -352,7 +352,7 @@ cc.Class({
         let goodInfo = { 
             itemID: "coin_99"
         };
-        ThirdPartyBuyGood(goodInfo);
+        ThirdPartyBuyGood(JSON.stringify(goodInfo));
     },
 
     //设置按钮点击事件