{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950754,-0.309946,0.000000,0.000000,0.173166,-0.531183,0.829372,0.000000,-0.256520,0.786870,0.561279,0.000000,-1637847.280145,5024062.703683,3559702.573630,1],    "boundingVolume": {    "region": [1.885860,0.595820,1.886006,0.596040,0.000000,8.817084]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1422218.b3dm"}}}