{ "layers": [ { "layerId": 0, "layerName": "StreetCenterline", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "9e2ae6d3310a4949835b17a6a7ae9c17", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARElEQVQ4jWNhoDJgGTWQYsBCuRGoYKQaqNeY1MDIxGhPiUH///0/eKl+XgNtXHipfl4DVQ2kJmChqmkMowZSAwz+SAEA5kQKwAlBl+sAAAAASUVORK5CYII=", "contentType": "image/png", "groupId": "0", "height": 20, "width": 20 } ], "legendGroups": [ { "id": "0", "heading": "" } ] } ] }