{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950596,-0.310432,0.000000,0.000000,0.173566,-0.531489,0.829093,0.000000,-0.256834,0.786471,0.561693,0.000000,-1639857.714041,5021525.766040,3562337.903946,1],    "boundingVolume": {    "region": [1.886395,0.596382,1.886493,0.596480,0.000000,10.796649]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/4_1388973.b3dm"}}}