{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949072,-0.315060,0.000000,0.000000,0.176046,-0.530312,0.829323,0.000000,-0.260737,0.785431,0.561351,0.000000,-1664772.344254,5014876.528022,3560162.434598,1],    "boundingVolume": {    "region": [1.891248,0.595964,1.891385,0.596071,0.000000,13.117660]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373681.b3dm"}}}