{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951072,-0.308968,0.000000,0.000000,0.113791,-0.350273,0.929710,0.000000,-0.286988,0.883412,0.370435,0.000000,-1831289.063952,5637109.527022,2347946.820516,1],    "boundingVolume": {    "region": [1.884903,0.379476,1.884905,0.379478,0.000000,3.812961]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/20.b3dm"}}}