sample.geojson

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -74.82650756835938,
              40.053898781018304
            ],
            [
              -75.07095336914062,
              40.22082997283287
            ],
            [
              -75.52276611328125,
              39.98238166771571
            ],
            [
              -75.31539916992188,
              39.75893570672903
            ],
            [
              -74.82650756835938,
              40.053898781018304
            ]
          ]
        ]
      }
    }
  ]
}