{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950474,-0.310803,0.000000,0.000000,0.173810,-0.531534,0.829013,0.000000,-0.257117,0.786294,0.561812,0.000000,-1641659.877141,5020397.742894,3563092.588301,1],    "boundingVolume": {    "region": [1.886785,0.596525,1.886883,0.596624,0.000000,11.896035]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1391498.b3dm"}}}