{ "layers": [ { "layerId": 4, "layerName": "usdw_contour", "layerType": "Feature Layer", "minScale": 4622324, "maxScale": 288895, "legend": [ { "label": "", "url": "ea042d1608d2b41ceefc1f00f1977c94", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAU0lEQVQ4jWNhoDJgGTVw1ECyDfz/HyHEyEiaGKo4C4SDTZIYMUZGdP0smJpw8fGpQRiKZCC6t8h2IUwQl8GExFD1s2DajK6BkBiq+JBJh6MGUgAA2uosU0IbZ9oAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }