{ "layers": [ { "layerId": 0, "layerName": "Track", "layerType": "Feature Layer", "minScale": 0, "maxScale": 0, "legend": [ { "label": "", "url": "9b31bb467fda7400bedc7eff598d8475", "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAD5JREFUOI3t0rEJADAQQlE/3P4rmyJkgWCRgFdZPRRuFL4pWPAStO0EBjApTNrF8pMBopNPSIDSN29T8C1wAf/DEFHaswCMAAAAAElFTkSuQmCC", "contentType": "image/png", "height": 20, "width": 20 } ] } ] }