{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949069,-0.315067,0.000000,0.000000,0.176202,-0.530768,0.828998,0.000000,-0.260640,0.785118,0.561833,0.000000,-1664153.920211,5012889.396042,3563228.110288,1],    "boundingVolume": {    "region": [1.891273,0.596590,1.891375,0.596611,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419270.b3dm"}}}