{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948965,-0.315383,0.000000,0.000000,0.176012,-0.529607,0.829781,0.000000,-0.261149,0.785780,0.560671,0.000000,-1667399.741522,5017091.819192,3555838.195557,1],    "boundingVolume": {    "region": [1.891609,0.595100,1.891703,0.595291,0.000000,8.584053]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1073716.b3dm"}}}