{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950450,-0.310878,0.000000,0.000000,0.173528,-0.530528,0.829715,0.000000,-0.257398,0.786947,0.560768,0.000000,-1643453.512073,5024545.188380,3556458.067277,1],    "boundingVolume": {    "region": [1.886863,0.595255,1.886963,0.595372,0.000000,8.703896]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/9_1450480.b3dm"}}}