{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949011,-0.315243,0.000000,0.000000,0.175992,-0.529808,0.829657,0.000000,-0.260994,0.785699,0.560856,0.000000,-1666410.482234,5016581.982737,3557013.140964,1],    "boundingVolume": {    "region": [1.891440,0.595366,1.891578,0.595472,0.000000,8.086291]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/3_1072373.b3dm"}}}