curl --location --request POST '/complaint_gate/wechat_success' \
--data-urlencode 'complaint_no=' \
--data-urlencode 'business_code=' \
--data-urlencode 'mch_num=' \
--data-urlencode 'timestamp=' \
--data-urlencode 'sign='{
"code": 0,
"msg": "string",
"data": {}
}