{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.942685,-0.333683,0.000000,0.000000,0.186998,-0.528286,0.828218,0.000000,-0.275778,0.779097,0.562988,0.000000,-1760815.857209,4974464.578209,3570565.757617,1],    "boundingVolume": {    "region": [1.910942,0.597965,1.911067,0.598028,0.000000,8.482968]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/21_1285280.b3dm"}}}