{ "layers": [ { "layerId": 0, "layerName": "Interstate Highways FM", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "45a3444c345bac17930aa8fdf34bcab2", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARElEQVQ4jWNhoDJgGTWQYsBCuRGoYKQaqLc4r4GRgdGeEoP+M/w/eCl2UgNtXHgpdlIDVQ2kJmChqmkMowZSAwz+SAEAP6kJkp2ZrqsAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }