{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950522,-0.310657,0.000000,0.000000,0.173739,-0.531591,0.828991,0.000000,-0.256988,0.786313,0.561844,0.000000,-1640842.279990,5020517.985395,3563298.377723,1],    "boundingVolume": {    "region": [1.886631,0.596564,1.886729,0.596663,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1392863.b3dm"}}}