{
  "asset": { "version": "1.0" },
  "root": {
    "boundingVolume": {
      "sphere": [
        0,0,0,200000
      ]
    },
    "children": [],
    "content": { "uri": "BigCube.glb" },
    "geometricError": 0.0,
    "refine": "REPLACE"
  }
}