{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950510,-0.310693,0.000000,0.000000,0.173750,-0.531557,0.829010,0.000000,-0.257025,0.786322,0.561815,0.000000,-1641075.869097,5020574.492734,3563112.437653,1],    "boundingVolume": {    "region": [1.886670,0.596529,1.886768,0.596628,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1391596.b3dm"}}}