{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897476,-0.441063,0.000000,0.000000,0.283260,-0.576379,0.766519,0.000000,-0.337144,0.686021,0.644755,0.000000,-2153348.689503,4381640.095593,4090499.307102,1],    "boundingVolume": {    "region": [2.027516,0.700668,2.027642,0.700737,0.000000,7.866542]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/9_858994.b3dm"}}}