{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950643,-0.310288,0.000000,0.000000,0.173528,-0.531645,0.829001,0.000000,-0.256687,0.786422,0.561830,0.000000,-1638916.259994,5021213.670676,3563205.130620,1],    "boundingVolume": {    "region": [1.886247,0.596555,1.886338,0.596637,0.000000,12.082541]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6.b3dm"}}}