{
  "title": "거래 원장",
  "columns": [
    {
      "key": "asset",
      "label": "종목"
    },
    {
      "key": "amount",
      "label": "금액",
      "unit": "원",
      "numeric": true
    },
    {
      "key": "date",
      "label": "거래일"
    }
  ],
  "rows": [
    {
      "id": "alpha",
      "cells": {
        "asset": "ALFA",
        "amount": 1200000,
        "date": "2026-03-02"
      }
    },
    {
      "id": "beta",
      "cells": {
        "asset": "BETA",
        "amount": 850000,
        "date": "2026-03-04"
      }
    },
    {
      "id": "gamma",
      "cells": {
        "asset": "GAMA",
        "amount": null,
        "date": "2026-03-06"
      }
    }
  ]
}