创建代收reponse固定参数

{
    "code": 200,
    "message": "SUCCESS",
    "data": {
        "transactionRef": "e4b47eed-2f99-4617-94e1-637b6753894e",
        "merchantRef": "1fa498b3-4eec-4aae-94f9-bb47719b88b5",
        "amount": 100,
        "checkoutUrl": "https://www.finixpayment.com/checkout"
    }
}