{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949074,-0.315053,0.000000,0.000000,0.176034,-0.530289,0.829340,0.000000,-0.260736,0.785449,0.561326,0.000000,-1664766.332415,5014993.251281,3560001.904708,1],    "boundingVolume": {    "region": [1.891240,0.595934,1.891377,0.596040,0.000000,28.770337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373909.b3dm"}}}