{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950652,-0.310259,0.000000,0.000000,0.173288,-0.530965,0.829486,0.000000,-0.256815,0.786895,0.561109,0.000000,-1639728.504378,5024218.485544,3558623.747087,1],    "boundingVolume": {    "region": [1.886204,0.595668,1.886320,0.595782,0.000000,8.786480]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_1424261.b3dm"}}}