{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950045,-0.312114,0.000000,0.000000,0.174284,-0.530505,0.829572,0.000000,-0.258376,0.786474,0.560982,0.000000,-1649698.504563,5021528.743230,3557817.662229,1],    "boundingVolume": {    "region": [1.888131,0.595506,1.888295,0.595637,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1456025.b3dm"}}}