{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949012,-0.315240,0.000000,0.000000,0.115937,-0.349020,0.929916,0.000000,-0.292879,0.881695,0.369913,0.000000,-1868879.775273,5626149.968754,2344633.749649,1],    "boundingVolume": {    "region": [1.891454,0.378880,1.891559,0.378950,0.000000,25.625963]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/7/21_7742.b3dm"}}}