{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949083,-0.315026,0.000000,0.000000,0.176183,-0.530788,0.828990,0.000000,-0.260603,0.785121,0.561846,0.000000,-1663919.024511,5012910.916609,3563306.998578,1],    "boundingVolume": {    "region": [1.891230,0.596605,1.891331,0.596626,0.000000,9.660840]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/10_1420645.b3dm"}}}