{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949066,-0.315076,0.000000,0.000000,0.176052,-0.530301,0.829329,0.000000,-0.260752,0.785432,0.561342,0.000000,-1664868.856359,5014884.507234,3560106.440465,1],    "boundingVolume": {    "region": [1.891265,0.595954,1.891402,0.596060,0.000000,28.770337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373769.b3dm"}}}