{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858372,-0.513028,0.000000,0.000000,0.262719,-0.439567,0.858929,0.000000,-0.439876,0.735976,0.514634,0.000000,-2808078.183271,4698325.166628,3263326.251747,1],    "boundingVolume": {    "region": [2.109423,0.540518,2.109588,0.540643,0.000000,7.987366]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_269504.b3dm"}}}