{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949083,-0.315026,0.000000,0.000000,0.176181,-0.530781,0.828995,0.000000,-0.260605,0.785126,0.561839,0.000000,-1663930.919604,5012938.985088,3563262.258035,1],    "boundingVolume": {    "region": [1.891230,0.596596,1.891332,0.596618,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419894.b3dm"}}}