{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949632,-0.313366,0.000000,0.000000,0.116144,-0.351965,0.928779,0.000000,-0.290778,0.881181,0.372785,0.000000,-1855484.918831,5622907.907838,2362855.639185,1],    "boundingVolume": {    "region": [1.889463,0.381959,1.889601,0.382058,0.000000,5.763817]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/8/21_64479.b3dm"}}}