{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948948,-0.315434,0.000000,0.000000,0.176021,-0.529541,0.829821,0.000000,-0.261204,0.785804,0.560611,0.000000,-1667751.601985,5017245.026806,3555459.544940,1],    "boundingVolume": {    "region": [1.891663,0.595028,1.891757,0.595219,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1074871.b3dm"}}}