{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950646,-0.310277,0.000000,0.000000,0.173515,-0.531626,0.829015,0.000000,-0.256682,0.786439,0.561808,0.000000,-1638886.582617,5021322.412194,3563066.474005,1],    "boundingVolume": {    "region": [1.886232,0.596520,1.886330,0.596619,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391283.b3dm"}}}