{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898032,-0.439931,0.000000,0.000000,0.281266,-0.574150,0.768922,0.000000,-0.337341,0.688616,0.641880,0.000000,-2154581.815887,4398154.616858,4072208.793742,1],    "boundingVolume": {    "region": [2.026271,0.696919,2.026364,0.696975,0.000000,48.759806]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/4_751221.b3dm"}}}