curl --request GET \
  --url https://api.agg.market/execution/balances \
  --header 'Authorization: Bearer <token>' \
  --header 'x-app-id: <api-key>'

{
  "cash": [
    {
      "tokenSymbol": "<string>",
      "totalRaw": "<string>",
      "decimals": 123,
      "chains": [
        {
          "chainId": 123,
          "tokenAddress": "<string>",
          "balanceRaw": "<string>",
          "lastSyncedAt": "<string>"
        }
      ]
    }
  ],
  "positions": [
    {
      "venue": "kalshi",
      "balance": 123,
      "costBasis": 123,
      "unrealizedPnl": 123,
      "realizedPnl": 123
    }
  ]
}