{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948945,-0.315443,0.000000,0.000000,0.176021,-0.529522,0.829833,0.000000,-0.261216,0.785813,0.560593,0.000000,-1667824.543300,5017303.389726,3555343.749645,1],    "boundingVolume": {    "region": [1.891672,0.595006,1.891767,0.595197,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075184.b3dm"}}}