{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899271,-0.437392,0.000000,0.000000,0.283069,-0.581987,0.762341,0.000000,-0.332501,0.683617,0.649700,0.000000,-2123740.110177,4366378.811194,4121964.046732,1],    "boundingVolume": {    "region": [2.023405,0.707135,2.023580,0.707245,0.000000,42.108763]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_1801612.b3dm"}}}