{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950369,-0.311124,0.000000,0.000000,0.174017,-0.531558,0.828954,0.000000,-0.257363,0.786151,0.561899,0.000000,-1643235.526593,5019487.799309,3563644.506630,1],    "boundingVolume": {    "region": [1.887122,0.596630,1.887220,0.596729,0.000000,8.818804]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_1399879.b3dm"}}}