{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950955,-0.309328,0.000000,0.000000,0.116159,-0.357102,0.926815,0.000000,-0.286417,0.880520,0.377690,0.000000,-1827679.069588,5618762.253611,2393973.009735,1],    "boundingVolume": {    "region": [1.885217,0.387283,1.885348,0.387317,0.000000,8.090694]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/20.b3dm"}}}