{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950548,-0.310577,0.000000,0.000000,0.173712,-0.531663,0.828950,0.000000,-0.256910,0.786296,0.561904,0.000000,-1640339.796081,5020409.684861,3563679.726167,1],    "boundingVolume": {    "region": [1.886547,0.596637,1.886645,0.596736,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394580.b3dm"}}}