{ "layers": [ { "layerId": 0, "layerName": "Skyglow Threshold", "layerType": "Raster Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "High Skyglow", "url": "f2c5dae169c5fc091592761e9e28c5b5", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOklEQVQ4jWNhoDJgoZmB/8GIfMAIRrR0IbUAC9VMgoJRAykHLFQwAwWMGkg5YBnBBjJCyzOqGUgtAABgfwJTnasaYgAAAABJRU5ErkJggg==", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 }, { "label": "Low/Moderate Skyglow", "url": "2929d707f0123217796e580c46f8a8e6", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAP0lEQVQ4je3UsQ0AIBBCUU0YkFHZUKszuRrs7g/wCgqwwuEbKOk4EMndwFQY0A4+0RvQDwGjNaDf27D+LAamugJaBULzW/30AAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }