{

    "code": "PARAM_ERROR",

    "detail": {

        "location": "body",

        "value": "{{1655979653}}"

    },

    "message": "输入源“/body/mchid”映射到值字段“直连商户号”字符串规则校验失败，字符串必须匹配正则表达式“^[1-9]\\d*$”"

}