数据类型：RefundResult
| 字段 | 类型 | 含义 | 建议 | 备注 |
|---|---|---|---|---|
| refund_amount | Amount | 退款金额 | 必须 | |
| refund_reason | String | 退款原因 | 强烈建议 |
{
"refund_amount": {
"currency": "CNY",
"amount_local": 68,
"amount_usd": 10,
"amount_cny": 68
},
"refund_reason": "XXX"
}