{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950635,-0.310312,0.000000,0.000000,0.173540,-0.531636,0.829004,0.000000,-0.256707,0.786418,0.561825,0.000000,-1639047.738652,5021190.353899,3563177.696199,1],    "boundingVolume": {    "region": [1.886269,0.596541,1.886366,0.596640,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391984.b3dm"}}}