{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950210,-0.311611,0.000000,0.000000,0.174263,-0.531388,0.829011,0.000000,-0.257784,0.786074,0.561814,0.000000,-1645921.962784,5018991.663368,3563107.115936,1],    "boundingVolume": {    "region": [1.887608,0.596485,1.887760,0.596670,0.000000,8.785472]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/3_1398931.b3dm"}}}