{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950641,-0.310293,0.000000,0.000000,0.173523,-0.531622,0.829016,0.000000,-0.256696,0.786435,0.561807,0.000000,-1638971.839753,5021300.555202,3563058.116321,1],    "boundingVolume": {    "region": [1.886249,0.596519,1.886346,0.596617,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391240.b3dm"}}}