{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950044,-0.312115,0.000000,0.000000,0.174284,-0.530502,0.829574,0.000000,-0.258378,0.786475,0.560979,0.000000,-1649710.873887,5021539.090789,3557797.458240,1],    "boundingVolume": {    "region": [1.888133,0.595502,1.888297,0.595633,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1455978.b3dm"}}}