{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949054,-0.315112,0.000000,0.000000,0.176147,-0.530521,0.829168,0.000000,-0.260731,0.785268,0.561581,0.000000,-1664734.034844,5013843.728349,3561624.850987,1],    "boundingVolume": {    "region": [1.891303,0.596242,1.891440,0.596349,0.000000,8.803784]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1447778.b3dm"}}}