{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950278,-0.311403,0.000000,0.000000,0.173775,-0.530292,0.829815,0.000000,-0.257864,0.786900,0.560620,0.000000,-1646427.801757,5024242.796859,3555515.821290,1],    "boundingVolume": {    "region": [1.887416,0.595076,1.887515,0.595193,0.000000,8.758932]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453530.b3dm"}}}