validGeoJSON

{
  "type": "Feature",
  "bbox": [
    669243.9209251693,
    223895.80049622757,
    716899.6020993304,
    283343.19079530047
  ],
  "id": 1,
  "properties": {
    "ak": "ZH",
    "label": "Zürich",
    "name": "Zürich",
    "flaeche": 172894,
    "layerBodId": "ch.swisstopo.swissboundaries3d-kanton-flaeche.fill",
    "featureId": 1,
    "layerName": "Cantonal boundaries"
  },
  "geometry": {
    "type": "MultiPolygon",
    "coordinates": [
      [
        [
          [
            673540.9013528372,
            233505.99998713256
          ],
          [
            673422.4426639405,
            233677.31200497225
          ],
          [
            673428.9438991889,
            233668.06906257954
          ],
          [
            673540.9013528372,
            233505.99998713256
          ]
        ]
      ]
    ]
  }
}