{
"manageEntity": {
"action": "Save",
"entityId": "517105059",
"entityType": "Track",
"nonce": "1792393683289379895",
"signature": "0x81218c534706b1899e08f15c7af3d19849c3f4129e7b85d6de5a3a8d367253ac5ec4b97037438515e6a619ff5a4b6678858686cc496e2a5857435cd537d1aa3f1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}