{ "mch_id": "12334", "merchant_name": "xxx" }
curl --location -g --request POST 'http://127.0.0.1/cgi-bin/externalpay/addmerchant?access_token={{accesstoken}}' \ --header 'Content-Type: application/json' \ --data-raw '{ "mch_id": "12334", "merchant_name": "xxx" }'
{ "errcode": 0, "errmsg": "ok" }