{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949084,-0.315024,0.000000,0.000000,0.176021,-0.530303,0.829334,0.000000,-0.260711,0.785451,0.561334,0.000000,-1664605.135717,5015007.502911,3560056.834589,1],    "boundingVolume": {    "region": [1.891210,0.595944,1.891347,0.596051,0.000000,28.770337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373840.b3dm"}}}