{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949137,-0.314863,0.000000,0.000000,0.116546,-0.351322,0.928973,0.000000,-0.292229,0.880907,0.372298,0.000000,-1864739.388576,5621151.693656,2359767.643290,1],    "boundingVolume": {    "region": [1.891040,0.381434,1.891178,0.381534,0.000000,5.591258]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_68130.b3dm"}}}