{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950099,-0.311948,0.000000,0.000000,0.174249,-0.530708,0.829450,0.000000,-0.258201,0.786402,0.561163,0.000000,-1648582.122299,5021073.531654,3558969.642382,1],    "boundingVolume": {    "region": [1.887990,0.595732,1.888089,0.595849,0.000000,8.583415]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1428978.b3dm"}}}