{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949078,-0.315040,0.000000,0.000000,0.116170,-0.349969,0.929530,0.000000,-0.292571,0.881387,0.370891,0.000000,-1866914.534223,5624194.944364,2350839.736301,1],    "boundingVolume": {    "region": [1.891241,0.379911,1.891350,0.380026,0.000000,70.386220]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_1266.b3dm"}}}