{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950564,-0.310528,0.000000,0.000000,0.173728,-0.531805,0.828856,0.000000,-0.256840,0.786219,0.562044,0.000000,-1639893.487423,5019921.013794,3564567.429624,1],    "boundingVolume": {    "region": [1.886496,0.596806,1.886593,0.596905,0.000000,7.670105]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_1327257.b3dm"}}}