curl --location --request POST 'https://api.kfim.cn/pay_gate/general_account_refund' \
--data-urlencode 'notify_url=' \
--data-urlencode 'notify_format=' \
--data-urlencode 'party_order_number=' \
--data-urlencode 'client_ip=' \
--data-urlencode 'refund_no=' \
--data-urlencode 'refund_total=' \
--data-urlencode 'refund_reason=' \
--data-urlencode 'refund_split_info=' \
--data-urlencode 'refund_split_info[][merchant_code]=' \
--data-urlencode 'refund_split_info[][refund_amount]=' \
--data-urlencode 'business_code=' \
--data-urlencode 'mch_num=' \
--data-urlencode 'timestamp=' \
--data-urlencode 'sign='
{
"code": 0,
"msg": "success",
"data": {}
}