{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950386,-0.311074,0.000000,0.000000,0.173964,-0.531489,0.829009,0.000000,-0.257340,0.786218,0.561817,0.000000,-1643085.551659,5019909.967886,3563122.477635,1],    "boundingVolume": {    "region": [1.887071,0.596531,1.887168,0.596630,0.000000,8.784401]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/6_1391603.b3dm"}}}