{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950560,-0.310541,0.000000,0.000000,0.173631,-0.531482,0.829083,0.000000,-0.256922,0.786433,0.561707,0.000000,-1640417.137966,5021280.374989,3562425.645442,1],    "boundingVolume": {    "region": [1.886510,0.596398,1.886608,0.596497,0.000000,8.566649]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_1389155.b3dm"}}}