{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948984,-0.315323,0.000000,0.000000,0.176045,-0.529820,0.829638,0.000000,-0.261054,0.785659,0.560884,0.000000,-1666795.563070,5016325.939404,3557192.598958,1],    "boundingVolume": {    "region": [1.891525,0.595400,1.891662,0.595506,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071901.b3dm"}}}