{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950678,-0.310180,0.000000,0.000000,0.173171,-0.530755,0.829645,0.000000,-0.256798,0.787068,0.560873,0.000000,-1639623.316201,5025323.852921,3557121.243504,1],    "boundingVolume": {    "region": [1.886121,0.595382,1.886236,0.595497,0.000000,8.789628]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1451166.b3dm"}}}