{
  "schema_version": 2,
  "id": "write_test",
  "size": { "w": 4, "h": 4 },
  "atlases": ["demo_tilemap"],
  "layers": {
    "surface": {
      "tiles": [
        0, 0, 0, 0,
        0, 0, 0, 0,
        0, 0, 0, 0,
        0, 0, 0, 0
      ]
    }
  }
}