{
  "data": [
    {
      "id": 1,
      "region": "Europe",
      "country": "Portugal",
      "city": "Lisbon",
      "value": 22
    },
    {
      "id": 2,
      "region": "Europe",
      "country": "Portugal",
      "city": "Porto",
      "value": 12
    },
    {
      "id": 3,
      "region": "Europe",
      "country": "Spain",
      "city": "Madrid",
      "value": 18
    },
    {
      "id": 4,
      "region": "Europe",
      "country": "Spain",
      "city": "Barcelona",
      "value": 14
    },
    {
      "id": 5,
      "region": "Americas",
      "country": "USA",
      "city": "Boston",
      "value": 20
    },
    {
      "id": 6,
      "region": "Americas",
      "country": "USA",
      "city": "Austin",
      "value": 15
    },
    {
      "id": 7,
      "region": "Americas",
      "country": "Canada",
      "city": "Toronto",
      "value": 16
    },
    {
      "id": 8,
      "region": "Americas",
      "country": "Canada",
      "city": "Vancouver",
      "value": 10
    }
  ],
  "mapping": {
    "category": {
      "field": "id",
      "path": [
        "region",
        "country",
        "city"
      ]
    },
    "series": [
      {
        "field": "value",
        "label": "Revenue"
      }
    ]
  },
  "presentation": {
    "dataLabels": false
  }
}