{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950587,-0.310458,0.000000,0.000000,0.173616,-0.531592,0.829016,0.000000,-0.256832,0.786390,0.561807,0.000000,-1639841.224184,5021013.192734,3563063.027710,1],    "boundingVolume": {    "region": [1.886422,0.596520,1.886520,0.596618,0.000000,13.019579]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/6_1391257.b3dm"}}}