{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951247,-0.308431,0.000000,0.000000,0.115710,-0.356866,0.926962,0.000000,-0.285632,0.880931,0.377325,0.000000,-1822670.281322,5621379.484663,2391661.992644,1],    "boundingVolume": {    "region": [1.884258,0.386855,1.884421,0.386958,0.000000,8.737465]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/16_66917.b3dm"}}}