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     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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    },
    {
     "label": "30.1% - 40.0%",
     "url": "d5e46f8eb75d4b6a7670e909e0d291a0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALklEQVQ4jWP55af1n4FKgG3TNUYWahkGA6MGjho4auCogaMG0spAtk3XGKlpIABbfQXgHtWeoAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "40.1% - 50.0%",
     "url": "e6bc676b88ee4ae6640275c73b50be35",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALklEQVQ4jWN5LCXzn4FKQPbZE0YWahkGA6MGjho4auCogaMG0spA2WdPGKlpIABckQY58pJ55wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
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     ]
    },
    {
     "label": "50.1% - 100.0%",
     "url": "04716c1bb05404e129ee45548015aa15",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALklEQVQ4jWPZyKD2n4FKwJ/hFiMLtQyDgVEDRw0cNXDUwFEDaWWgP8MtRmoaCAAIOQR7zOwLHAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      1
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Child poverty 1980"
    }
   ]
  }
 ]
}