{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898917,-0.438119,0.000000,0.000000,0.283005,-0.580660,0.763375,0.000000,-0.333509,0.684283,0.648481,0.000000,-2130167.720061,4370608.440884,4114209.686959,1],    "boundingVolume": {    "region": [2.024218,0.705528,2.024383,0.705647,0.000000,18.588896]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1828050.b3dm"}}}