mapnik/tests/data/json/feature_collection_level_properties.json

{
  "type": "FeatureCollection",
   "properties": {
      "fc_name": "fc_value"
    },
    "features": [
      {
          "type": "Feature",
          "properties": {
            "feat_name": "feat_value"
          },
          "geometry": {
              "type": "Point",
              "coordinates": [ -122, 48 ]
          }
      }
  ]
}