{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.942681,-0.333694,0.000000,0.000000,0.187017,-0.528321,0.828192,0.000000,-0.275778,0.779068,0.563027,0.000000,-1760818.481646,4974282.510853,3570816.414392,1],    "boundingVolume": {    "region": [1.910954,0.598013,1.911079,0.598076,0.000000,6.959807]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/21_1250054.b3dm"}}}