{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950099,-0.311947,0.000000,0.000000,0.173924,-0.529720,0.830149,0.000000,-0.258420,0.787071,0.560124,0.000000,-1649971.631972,5025326.605404,3552361.212374,1],    "boundingVolume": {    "region": [1.887956,0.594469,1.888120,0.594601,0.000000,8.766006]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1458330.b3dm"}}}