{
  "account_id": "DEMOSTRATIVA",
  "balance_history": [
    {
      "fecha": "2026-02-19",
      "balance": 5000.00,
      "timestamp": "2026-02-19T00:00:00Z",
      "trades_day": 0,
      "profit_day": 0.0
    }
  ],
  "nota": "Se agrega un registro diario al finalizar las operaciones del dia"
}