{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949041,-0.315154,0.000000,0.000000,0.176091,-0.530273,0.829338,0.000000,-0.260819,0.785419,0.561329,0.000000,-1665298.664670,5014803.618460,3560019.940078,1],    "boundingVolume": {    "region": [1.891347,0.595937,1.891484,0.596044,0.000000,14.029451]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1373891.b3dm"}}}