{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950695,-0.310129,0.000000,0.000000,0.173088,-0.530598,0.829763,0.000000,-0.256793,0.787194,0.560698,0.000000,-1639585.179646,5026125.755558,3556013.137796,1],    "boundingVolume": {    "region": [1.886067,0.595172,1.886182,0.595286,0.000000,8.811263]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1450265.b3dm"}}}