{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950369,-0.311126,0.000000,0.000000,0.174017,-0.531553,0.828957,0.000000,-0.257366,0.786153,0.561895,0.000000,-1643255.159738,5019501.132516,3563616.859536,1],    "boundingVolume": {    "region": [1.887125,0.596625,1.887223,0.596724,0.000000,8.468062]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/7_1399821.b3dm"}}}