<xml>

<appid>wxa5b52c******b12d</appid>

<mch_id>1541******</mch_id>

<nonce_str>1549346721</nonce_str>

<sign><![CDATA[139AF00B5A51445938695E42EC371C77]]></sign>

<sign_type>MD5</sign_type>

<transaction_id>160896557147*****289</transaction_id>

</xml>

还缺啥？