{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950484,-0.310772,0.000000,0.000000,0.173798,-0.531555,0.829001,0.000000,-0.257087,0.786292,0.561829,0.000000,-1641474.033503,5020383.444309,3563197.646166,1],    "boundingVolume": {    "region": [1.886753,0.596545,1.886851,0.596644,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1392107.b3dm"}}}