{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950503,-0.310716,0.000000,0.000000,0.173774,-0.531588,0.828985,0.000000,-0.257036,0.786291,0.561853,0.000000,-1641143.554490,5020381.867679,3563351.058225,1],    "boundingVolume": {    "region": [1.886693,0.596574,1.886791,0.596673,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1393148.b3dm"}}}