https://developers.weixin.qq.com/doc/offiaccount/Message_Management/Receiving_event_pushes.html
返回消息为
replyMsg: <xml>
<Encrypt><![CDATA[v5Bwe9znksEBzwtsO4+CYuE1780HboIM4flNXdk9+LvAiYMJTVzTbvpOk1l6luBHSuYNZ0YouPOltUokHlC6Q1nr2/IIgiK60MzstbWTgHHnvJoUxkJHY8QkqzygvhzjBhsM+sfCMoqYNofi5Dharjh/tnwk28IwevR+vPnN6ffilxzhacSG4owbQu+Hh7EnZc8HGj/fiPoqqQo7HACduPwJW9yuzdAcmws5vV0c/BRZffLkdDbCQizqs3pCV8CarVUNGiLpsEr+BtLWyRZI85NJcNNhhwRtnpWhQf3IusnU0pqMt4TehyHZ1X2dw5MKomnQf30fQntLKG+J3O+GKtjYNsFrOuiOqmKBepJRVIqslq+CBcfpfV1lbNQy1xBtPiUAPlpuoH7mzuxoawmjMdGL1uDyKXVtNIigZzDrBpaQSvbP2fhMOP0u8Rckc2ojxWAZj+He/BoLNIffyQJyeg==]]></Encrypt>
<MsgSignature><![CDATA[53e36e35ba4a692aaa208cde8ca1a4a17dac1fc0]]></MsgSignature>
<TimeStamp>1614308804</TimeStamp>
<Nonce><![CDATA[374780432]]></Nonce>
</xml>
求帮助