{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "raw_cube", "op": {"type": "Cube", "size": {"x": 25, "y": 25, "z": 25}} },
    "2": { "id": 2, "name": "centered_cube", "op": {"type": "Translate", "child": 1, "offset": {"x": -12.5, "y": -12.5, "z": -12.5}} }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{ "root": 2, "material": "default" }]
}