{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950740,-0.309990,0.000000,0.000000,0.173183,-0.531153,0.829388,0.000000,-0.256561,0.786873,0.561255,0.000000,-1638111.218060,5024082.480973,3559554.207568,1],    "boundingVolume": {    "region": [1.885906,0.595792,1.886052,0.596012,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422143.b3dm"}}}