{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858211,-0.513298,0.000000,0.000000,0.262550,-0.438972,0.859285,0.000000,-0.440291,0.736146,0.514036,0.000000,-2810721.220083,4699401.185548,3259524.890372,1],    "boundingVolume": {    "region": [2.109737,0.539820,2.109901,0.539945,0.000000,83.499081]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/3_321742.b3dm"}}}