{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950557,-0.310551,0.000000,0.000000,0.173699,-0.531671,0.828948,0.000000,-0.256888,0.786300,0.561908,0.000000,-1640198.701762,5020438.585607,3563703.791291,1],    "boundingVolume": {    "region": [1.886520,0.596641,1.886618,0.596740,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394621.b3dm"}}}