curl --location '/商户请求地址' \
--header 'Signature-Type: RSA' \
--header 'Signature-Type: RSA' \
--header 'Signature-Data;' \
--header 'Signature-Data;' \
--header 'mch_id;' \
--header 'mch_id: 2020042200284052' \
--header 'sp_no;' \
--header 'sp_no;' \
--header 'timestamp;' \
--header 'timestamp: 20221109111509' \
--header 'Content-Type: application/json;charset=utf-8' \
--data '{
"mch_id": "2020042200284052",
"sub_mchid": "302210180000021525",
"txn_seqno": "string",
"plaltform_txno": "string",
"refund_amount": 0,
"txn_status": "SUCCESS",
"account_date": "2019-08-24"
}'