{ "layers": [ { "layerId": 1, "layerName": "BlockGroupPopHU", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "42f0dd948c1bc8c149ad11b5eb67af0c", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAXElEQVQ4jWN5NoPhPwMVAQuMwcjAcIASg/4zMDjADQQZJpnB4EiJgc9nMOwHGQp3IbUAy6iBFAMWyo1ABaMGUg5YqGAGChg1kHIADkNQOQYqzygxCKWARRagFAAAsLcPyczUBp8AAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }