MerchantApiResponse

{
    "code": 0,
    "message": "成功",
    "data": {},
    "timestamp": 1704067200000,
    "requestId": "req_123456789",
    "encrypted": false,
    "encryptedData": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
    "signature": "string"
}