{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858257,-0.513219,0.000000,0.000000,0.262460,-0.438912,0.859344,0.000000,-0.440254,0.736237,0.513937,0.000000,-2810485.561694,4699978.940993,3258899.221918,1],    "boundingVolume": {    "region": [2.109646,0.539705,2.109810,0.539831,0.000000,6.484500]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/2_303656.b3dm"}}}