{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950683,-0.310165,0.000000,0.000000,0.173143,-0.530698,0.829687,0.000000,-0.256800,0.787112,0.560810,0.000000,-1639629.608095,5025604.330563,3556724.737399,1],    "boundingVolume": {    "region": [1.886105,0.595307,1.886221,0.595421,0.000000,8.789628]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1450644.b3dm"}}}