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Content-Type: application/json; charset=utf-8

{
  "features": [
    {
      "geometry": null,
      "id": "testlayer èé.2",
      "properties": {
        "id": 3,
        "name": "three",
        "utf8nameè": "three èé↓"
      },
      "type": "Feature"
    }
  ],
  "type": "FeatureCollection"
}