{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950506,-0.310707,0.000000,0.000000,0.173771,-0.531596,0.828981,0.000000,-0.257027,0.786289,0.561860,0.000000,-1641087.580513,5020369.081623,3563394.557997,1],    "boundingVolume": {    "region": [1.886684,0.596583,1.886782,0.596681,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1393358.b3dm"}}}