{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Coastline",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7d471b2e55e74a994bfe93cfbb44f265",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASElEQVQ4jWNhKPj/n4GKgAVKNzIwMByg0CwHBgaGepiBBxgmMFJmYMF/BmQDqQZGDRw1cNTAUQPpa6ADtDyjBDggG1gPxRQDAJ/ZC6sctMINAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "National Grid Large",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 2000000,
   "legend": [
    {
     "label": "",
     "url": "b2aa98555d43154e15814ddfd38aae08",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAR0lEQVQ4jWP5X1//n4GKgAWJfYBCsxyQDTzA2NjoSIlp/+vr9zMwMDiwEFRJIhg1cNTAUQNHDaSvgQ7Q8owS4IBsIFyAUgAASHEMyV2XGygAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "National Grid Small",
   "layerType": "Feature Layer",
   "minScale": 2000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "b2aa98555d43154e15814ddfd38aae08",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAR0lEQVQ4jWP5X1//n4GKgAWJfYBCsxyQDTzA2NjoSIlp/+vr9zMwMDiwEFRJIhg1cNTAUQNHDaSvgQ7Q8owS4IBsIFyAUgAASHEMyV2XGygAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "uk_buffer50_smooth_simpl",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "d6219c80529b6f009450bae988beac60",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAU0lEQVQ4je3UwQ2AQAhEUSehMGyIqYWKdjsbTxr3ZAzGE/9ECHlHLCK0fZidA4BZgST5BQKYmblXQJJDktvz6bsabLDBBn8EJTnJUYGWB3tfVDsAp2IaXeRmwiUAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}