{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858319,-0.513116,0.000000,0.000000,0.262809,-0.439615,0.858877,0.000000,-0.439924,0.735886,0.514721,0.000000,-2808387.304645,4697751.893023,3263881.759796,1],    "boundingVolume": {    "region": [2.109526,0.540620,2.109690,0.540745,0.000000,5.790833]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_274590.b3dm"}}}