{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899363,-0.437204,0.000000,0.000000,0.282930,-0.582009,0.762376,0.000000,-0.332374,0.683718,0.649659,0.000000,-2122924.938967,4367023.880031,4121702.349170,1],    "boundingVolume": {    "region": [2.023196,0.707081,2.023371,0.707190,0.000000,14.860059]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_1800773.b3dm"}}}