curl --request GET \
  --url https://api.example.com/api/v1/balances/{address}

{
  "code": 0,
  "msg": "ok",
  "data": {
    "address": "0xabc1230000000000000000000000000000000000",
    "updatedAt": "2026-05-11T10:00:00.000Z",
    "chains": [
      {
        "chainId": 8453,
        "name": "Base",
        "isTestnet": false
      }
    ],
    "balances": [
      {
        "chainId": 8453,
        "tokenAddress": "native",
        "symbol": "ETH",
        "name": "ETH",
        "decimals": 18,
        "balance": "1000000000000000000",
        "formattedBalance": "1",
        "isNative": true
      }
    ]
  }
}