{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858480,-0.512846,0.000000,0.000000,0.262621,-0.439616,0.858934,0.000000,-0.439722,0.736074,0.514625,0.000000,-2807099.022282,4698949.050216,3263270.755501,1],    "boundingVolume": {    "region": [2.109211,0.540508,2.109376,0.540633,0.000000,23.639566]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_269139.b3dm"}}}