{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858422,-0.512945,0.000000,0.000000,0.262646,-0.439542,0.858965,0.000000,-0.439822,0.736050,0.514574,0.000000,-2807737.123060,4698793.050861,3262948.575245,1],    "boundingVolume": {    "region": [2.109326,0.540449,2.109490,0.540574,0.000000,44.774900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_265505.b3dm"}}}