chart.json

{
  "type": "line",
  "data": {
    "labels": [],
    "datasets": [
      {
        "data": [],
        "fill": false,
        "borderColor": "__GRADIENT__",
        "borderWidth": 5,
        "pointRadius": 0
      }
    ]
  },
  "options": {
    "legend": {
      "display": false
    },
    "scales": {
      "xAxes": [
        {
          "type": "time",
          "distribution": "series",
          "gridLines": {
            "display": false
          },
          "time": {
            "unit": "day"
          }
        }
      ],
      "yAxes": [
        {
          "gridLines": {
            "display": false
          },
          "ticks": {
            "suggestedMin": 50,
            "suggestedMax": 100
          }
        }
      ]
    }
  }
}