{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950515,-0.310680,0.000000,0.000000,0.173704,-0.531442,0.829093,0.000000,-0.257040,0.786405,0.561692,0.000000,-1641170.083236,5021101.596569,3562331.470669,1],    "boundingVolume": {    "region": [1.886656,0.596380,1.886754,0.596479,0.000000,8.679983]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_1388972.b3dm"}}}