{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Atlas Page Index",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f1a8be1d60c428b36a74a8648e211ccc",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAE9JREFUOI1jYaAyYMEneZTh/39s4tYMjIx4DYRpxKeQGIutGRgZ8bqQHAvwGkgOGCIGkhsZMICsf4h4eQQaSLesRw4Y4gaSXR7SLeuRYxEAPmITvzAKguUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}