{
  "balances": [
    {
      "currency": "USDT",
      "amount": 2500
    },
    {
      "currency": "USDC",
      "amount": -100
    }
  ],
  "as_of": 1789084800
}

{
  "error": {
    "code": "internal_error",
    "message": "服务内部错误。"
  },
  "request_id": "example-request-id",
  "timestamp": 1789084800
}

{
  "error": {
    "code": "service_unavailable",
    "message": "余额查询服务暂时不可用，请稍后使用新的时间戳、nonce 和签名重试。"
  },
  "request_id": "example-request-id",
  "timestamp": 1789084800
}