{"layers": [{ "layerType": "Feature Layer", "layerId": 0, "maxScale": 0, "legend": [{ "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAT0lEQVQ4jWMpzC/azsTE5MBABfDv378DLCDDap06OKhhYPO+CgcWBioDllEDKQYslBuBCkYNpBywUMEMFDBq4Igw8N+/fwdAJS01DAOZBQCWKxNVLFf9zAAAAABJRU5ErkJggg==", "groupId": "0", "width": 20, "label": "", "contentType": "image/png", "url": "777fec577f0713af4daf4ba9344b04dc", "height": 20 }], "legendGroups": [{ "heading": "", "id": "0" }], "layerName": "Pollutant_pol_3D", "minScale": 0 }]}