{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950360,-0.311153,0.000000,0.000000,0.173666,-0.530431,0.829749,0.000000,-0.257636,0.786904,0.560719,0.000000,-1644972.423176,5024270.936839,3556145.392014,1],    "boundingVolume": {    "region": [1.887152,0.595195,1.887252,0.595312,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454325.b3dm"}}}