{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950156,-0.311776,0.000000,0.000000,0.114548,-0.349090,0.930062,0.000000,-0.289707,0.882898,0.369542,0.000000,-1848635.713482,5633818.358445,2342283.807935,1],    "boundingVolume": {    "region": [1.887839,0.378513,1.887877,0.378520,0.000000,5.731591]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/26.b3dm"}}}