{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950500,-0.310725,0.000000,0.000000,0.173731,-0.531439,0.829090,0.000000,-0.257076,0.786389,0.561698,0.000000,-1641400.617312,5021002.249282,3562365.057870,1],    "boundingVolume": {    "region": [1.886703,0.596387,1.886801,0.596486,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1389039.b3dm"}}}