{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.943988,-0.329979,0.000000,0.000000,0.184169,-0.526862,0.829758,0.000000,-0.273228,0.781637,0.560705,0.000000,-1744519.816571,4990641.090912,3556059.476216,1],    "boundingVolume": {    "region": [1.907030,0.595180,1.907125,0.595295,0.000000,7.738942]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1276250.b3dm"}}}