{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858242,-0.513245,0.000000,0.000000,0.262479,-0.438915,0.859336,0.000000,-0.440272,0.736217,0.513950,0.000000,-2810599.063703,4699852.389160,3258983.278223,1],    "boundingVolume": {    "region": [2.109675,0.539721,2.109840,0.539846,0.000000,9.692033]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/2_306984.b3dm"}}}