RefundReqDto

{
    "version": "v1.0",
    "merchant_id": "18000000000000",
    "refund_trans_id": "t202311081113",
    "ori_order_id": "GW200395192979024625",
    "timestamp": 1700805506000,
    "reason": "DUPLICATE",
    "refund_amount": 100,
    "currency": "CNY",
    "notify_url": "https://www.baidu.com"
}