curl --request GET \
  --url https://api.example.com/api/v1/execution/balances

{
  "code": 0,
  "msg": "ok",
  "data": {
    "items": [
      {
        "exchange": "okx",
        "asset": "USDT",
        "available": 100000,
        "frozen": 5000
      }
    ]
  }
}