{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950455,-0.310863,0.000000,0.000000,0.114373,-0.349692,0.929857,0.000000,-0.288794,0.882979,0.370062,0.000000,-1842815.237350,5634345.457938,2345577.950325,1],    "boundingVolume": {    "region": [1.886823,0.379036,1.886972,0.379115,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4176.b3dm"}}}