{
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         ,"geoJSONOpts": {
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      }
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   ,"datasets": [
      {
         "lid": "places"
         ,"type": "FGB"
         ,"baseUrl": "https://www.cloudnativemaps.com/cnm/data/vector/"
         ,"items": [
            {"item": "places.conus.fgb", "minZoom": 15, "maxZoom": 20, "extent": "-124.996670,24.453889,-66.518097,49.8708" }
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}