{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858543,-0.512741,0.000000,0.000000,0.262463,-0.439472,0.859056,0.000000,-0.439695,0.736234,0.514420,0.000000,-2806922.474130,4699963.412273,3261970.333571,1],    "boundingVolume": {    "region": [2.109089,0.540269,2.109253,0.540394,0.000000,10.589166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_248875.b3dm"}}}