{
  "name": "Chart 1",
  "series": [
    {
      "name": "series 1",
      "values": [
        {
          "id": "1",
          "start": "2015-01-01",
          "end": "2015-12-31",
          "value": 1
        },
        {
          "id": "2",
          "start": "2016-01-01",
          "end": "2016-12-31",
          "value": 2
        },
        {
          "id": "3",
          "start": "2017-01-01",
          "end": "2017-12-31",
          "value": 3
        },
        {
          "id": "4",
          "start": "2018-01-01",
          "end": "2018-12-31",
          "value": 4
        }
      ]
    },
    {
      "name": "series 2",
      "values": [
        {
          "id": "1",
          "start": "2015-01-01",
          "end": "2015-12-31",
          "value": 5
        },
        {
          "id": "2",
          "start": "2016-01-01",
          "end": "2016-12-31",
          "value": 6
        },
        {
          "id": "3",
          "start": "2017-01-01",
          "end": "2017-12-31",
          "value": 7
        },
        {
          "id": "4",
          "start": "2018-01-01",
          "end": "2018-12-31",
          "value": 8
        }
      ]
    }
  ]
}