{ "layers": [ { "layerId": 0, "layerName": "1939 Grid", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "a91eb87d7e6af9b875eac581c422e1ae", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAM0lEQVQ4jWP5v4rhPwMVAQs1DUMxkDGMgZESg2A+pZ0LRw0cNXDUwFED6WMgtUpuqrsQALq7CKGsk0guAAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 1, "layerName": "1955 Grid", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "44c0495df68e0942240e6a305e6f83be", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAMklEQVQ4jWNhiHn2n4GKgIWahqEauESKkSKToD6loQtHDRw1cNTAUQPpYyCVSm6quxAABm0H0z1CPmEAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 2, "layerName": "1965 Grid", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "df4ddf17918e2416e7dcc06ac3f2db20", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAM0lEQVQ4jWNZwcDwn4GKgIWahqEYGMHAwEiJQTCf0s6FowaOGjhq4KiB9DGQWiU31V0IAGCvBZ/1H7C3AAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] }, { "layerId": 3, "layerName": "1978 Grid", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "868bd656310212c64a4a9c376cf25f26", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAM0lEQVQ4jWMJ/c/wn4GKgIWahqEYuJqRgZESg2A+pZ0LRw0cNXDUwFED6WMgtUpuqrsQAILXB/e4tlKYAAAAAElFTkSuQmCC", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }