{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950557,-0.310550,0.000000,0.000000,0.173665,-0.531569,0.829020,0.000000,-0.256910,0.786370,0.561800,0.000000,-1640340.041909,5020882.066580,3563018.498485,1],    "boundingVolume": {    "region": [1.886519,0.596511,1.886617,0.596610,0.000000,12.476542]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391030.b3dm"}}}