{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950649,-0.310268,0.000000,0.000000,0.173159,-0.530552,0.829777,0.000000,-0.256913,0.787171,0.560676,0.000000,-1640350.108732,5025976.227062,3555872.653437,1],    "boundingVolume": {    "region": [1.886213,0.595145,1.886329,0.595259,0.000000,8.760802]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1450061.b3dm"}}}