{
  "legends": [
    {
      "visible": true,
      "position": "middle",
      "orient": "bottom",
      "item": {
        "visible": true,
        "align": "left",
        "label": {
          "style": {
            "fontSize": 16,
            "fill": "#B9B8CE"
          }
        }
      }
    }
  ]
}