{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950510,-0.310695,0.000000,0.000000,0.173757,-0.531574,0.828998,0.000000,-0.257023,0.786309,0.561834,0.000000,-1641060.258492,5020495.717264,3563229.831392,1],    "boundingVolume": {    "region": [1.886672,0.596551,1.886769,0.596650,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1392360.b3dm"}}}