{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950438,-0.310914,0.000000,0.000000,0.173529,-0.530463,0.829757,0.000000,-0.257441,0.786977,0.560706,0.000000,-1643726.750454,5024737.035987,3556063.383690,1],    "boundingVolume": {    "region": [1.886901,0.595180,1.887001,0.595297,0.000000,8.812789]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/8_1450333.b3dm"}}}