{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858260,-0.513215,0.000000,0.000000,0.262967,-0.439767,0.858751,0.000000,-0.439943,0.735727,0.514933,0.000000,-2808511.544916,4696738.119082,3265224.510070,1],    "boundingVolume": {    "region": [2.109640,0.540867,2.109804,0.540992,0.000000,48.306900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_457145.b3dm"}}}