{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950568,-0.310516,0.000000,0.000000,0.173647,-0.531577,0.829019,0.000000,-0.256881,0.786378,0.561802,0.000000,-1640154.020878,5020933.837758,3563031.094429,1],    "boundingVolume": {    "region": [1.886483,0.596514,1.886581,0.596612,0.000000,12.476542]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391087.b3dm"}}}