{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949585,-0.313509,0.000000,0.000000,0.116206,-0.351976,0.928767,0.000000,-0.290907,0.881126,0.372815,0.000000,-1856306.087904,5622556.759172,2363044.976956,1],    "boundingVolume": {    "region": [1.889613,0.381991,1.889751,0.382091,0.000000,4.876935]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/9/21_64496.b3dm"}}}