{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950559,-0.310545,0.000000,0.000000,0.173662,-0.531570,0.829020,0.000000,-0.256905,0.786371,0.561800,0.000000,-1640311.837087,5020891.406527,3563018.322933,1],    "boundingVolume": {    "region": [1.886514,0.596511,1.886612,0.596610,0.000000,12.476542]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391045.b3dm"}}}