{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949119,-0.314917,0.000000,0.000000,0.116119,-0.349968,0.929537,0.000000,-0.292458,0.881431,0.370873,0.000000,-1866195.853373,5624480.664308,2350727.539475,1],    "boundingVolume": {    "region": [1.891111,0.379892,1.891219,0.380007,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_1100.b3dm"}}}