{
  "version": "0.1",
  "nodes": {
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      "id": 1,
      "name": "Block",
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {"x": -30, "y": -20, "z": 0}
      }
    },
    "2": {
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      "name": "BlockCube",
      "op": {
        "type": "Cube",
        "size": {"x": 60, "y": 40, "z": 20}
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 1, "material": "default"}]
}