{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949036,-0.315167,0.000000,0.000000,0.175965,-0.529868,0.829624,0.000000,-0.260921,0.785689,0.560904,0.000000,-1665944.200358,5016517.051489,3557321.042618,1],    "boundingVolume": {    "region": [1.891360,0.595424,1.891498,0.595531,0.000000,8.290728]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1071673.b3dm"}}}