{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858337,-0.513087,0.000000,0.000000,0.262490,-0.439117,0.859229,0.000000,-0.440081,0.736206,0.514129,0.000000,-2809384.325960,4699784.640065,3260120.498732,1],    "boundingVolume": {    "region": [2.109491,0.539930,2.109656,0.540055,0.000000,101.578900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_219308.b3dm"}}}