{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950044,-0.312117,0.000000,0.000000,0.174286,-0.530504,0.829572,0.000000,-0.258379,0.786473,0.560981,0.000000,-1649718.276299,5021526.645023,3557811.497329,1],    "boundingVolume": {    "region": [1.888135,0.595505,1.888299,0.595636,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1456008.b3dm"}}}