{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950171,-0.311729,0.000000,0.000000,0.173872,-0.529972,0.829999,0.000000,-0.258192,0.786987,0.560347,0.000000,-1648519.105378,5024793.710176,3553779.546241,1],    "boundingVolume": {    "region": [1.887727,0.594739,1.887891,0.594870,0.000000,8.743291]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1459864.b3dm"}}}