wrongGeoJSON

{
  "feature": {
    "layerBodId": "ch.swisstopo.swissboundaries3d-kanton-flaeche.fill",
    "featureId": 1,
    "properties": {
      "ak": "ZH",
      "label": "Zürich",
      "name": "Zürich",
      "flaeche": 172894
    },
    "geometry": {
      "type": "MultiPolygon",
      "coordinates": [
        [
          [
            []
          ]
        ]
      ]
    },
    "bbox": [
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      283343.19079530047
    ],
    "layerName": "Frontiere cantonali",
    "type": "Feature",
    "id": 1
  }
}