{ "id": "5", "name": "Lithological boundary", "type": "Feature Layer", "minScale": "2400000", "maxScale": "500000", "legend": [ { "label": "Observed boundary", "description": "", "imageData": "iVBORw0KGgoAAAANSUhEUgAAACIAAAAiCAYAAAA6RwvCAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVElEQVRYhe3WsQ3AIBDAQCKxyu8/0O8SqJDASs2nsCe40v0do/2hXg1YCWFCmBAmhAlhQpgQdkAy8+qcRMTzCansgOzCUkhlQpgQJoQJYUKYECaETS7mB/W9X7NdAAAAAElFTkSuQmCC", "contentType": "image/png" } ] }