关注者给公众号发的消息，通过三方平台接收的时候携带的msgSignature和解析出来的不一致 请问如何解决？<xml>

    <ToUserName><![CDATA[gh_ffb596c64f68]]></ToUserName>

    <Encrypt><![CDATA[jdUlbzoDxvcS3yLABLeGao7zs5+nCSZrgN0Uk8ELLmbHcVQuiLoini7ru8pbXaX6PvoMGFc6+Kq+1ToWfICeIW1pfT+8WKvUE7HexfmXAk4+gw7HHJPYMNSgYUcZ54Ob6yM2BFa4tFYs37Z8rQkpij44byxzRHIEfMNNKvJ9hdxoWa8dl7/qpo6J/eG80K/F9aSysPj3rWl1W93S9bCIhJXn2CjSiVJ/4bB2lnxX6CsTI9xDA9us7fmHxV0vg03qtQXWNr8y3fkTQ87l8XzT2xKlONtxta2+TcTL1wPjqmGjl8C2b78eic8pMOHZrbJ5M5Wayu/a19ykntZJSX4GWzYDC/fcOxvANIFdmmGk307YTLMBXJTBaKBlz+DhdJIq/O4NER1Q4rtDbgXOkbQDSGi8ShGX+qhozHmzYLCpzro=]]></Encrypt>

</xml>