{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950755,-0.309943,0.000000,0.000000,0.172982,-0.530623,0.829769,0.000000,-0.256641,0.787251,0.560689,0.000000,-1638618.886025,5026484.097813,3555952.443176,1],    "boundingVolume": {    "region": [1.885872,0.595160,1.885988,0.595274,0.000000,8.761658]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1448477.b3dm"}}}