{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950734,-0.310009,0.000000,0.000000,0.173264,-0.531365,0.829235,0.000000,-0.256529,0.786722,0.561482,0.000000,-1637904.043254,5023122.515544,3560994.344741,1],    "boundingVolume": {    "region": [1.885925,0.596066,1.886071,0.596285,0.000000,8.760186]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1423209.b3dm"}}}