预期 接收小程序的客服发送文本消息回调：

{
  "ToUserName": "toUser",
  "FromUserName": "fromUser",
  "CreateTime": 1482048670,
  "MsgType": "text",
  "Content": "this is a test",
  "MsgId": 1234567890123456
}

实际接收小程序的客服消息回调:

{"ToUserName":"gh_9b0f30c01f12",

"FromUserName":"oORkF5ohDCIE_L9Agh30KI8BDXlM",

"CreateTime":1586492894,

"MsgType":"event",

"Event":"user_enter_tempsession","

SessionFrom":"wxapp"}

为什么会接收小程序的客服消息回调缺少Content字段