{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858392,-0.512995,0.000000,0.000000,0.262463,-0.439178,0.859206,0.000000,-0.439990,0.736233,0.514168,0.000000,-2808804.450907,4699958.200238,3260368.262154,1],    "boundingVolume": {    "region": [2.109384,0.539975,2.109549,0.540100,0.000000,101.578900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_220886.b3dm"}}}