{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948949,-0.315431,0.000000,0.000000,0.176025,-0.529556,0.829811,0.000000,-0.261198,0.785795,0.560626,0.000000,-1667714.777592,5017187.429453,3555557.434167,1],    "boundingVolume": {    "region": [1.891660,0.595047,1.891754,0.595237,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1074572.b3dm"}}}