新建数据模型

{
    "uniqueRefundNo": "string",
    "refundNo": "string",
    "orderNo": "string",
    "uniqueOrderNo": "string",
    "refundAmt": 0,
    "returnFee": 0,
    "status": "string",
    "failureReason": "string",
    "description": "string",
    "memo": "string",
    "refundRequestDate": "2019-08-24T14:15:22.123Z",
    "refundSuccessDate": "2019-08-24T14:15:22.123Z"
}