{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950638,-0.310301,0.000000,0.000000,0.116555,-0.357078,0.926774,0.000000,-0.287305,0.880188,0.377790,0.000000,-1833345.379826,5616642.718112,2394609.689152,1],    "boundingVolume": {    "region": [1.886246,0.387344,1.886365,0.387473,0.000000,7.916002]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/6_60386.b3dm"}}}