{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858271,-0.513196,0.000000,0.000000,0.262729,-0.439389,0.859018,0.000000,-0.440065,0.735967,0.514485,0.000000,-2809287.561392,4698261.953015,3262382.595638,1],    "boundingVolume": {    "region": [2.109619,0.540345,2.109783,0.540470,0.000000,54.673166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_391941.b3dm"}}}