{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029332038",
    "entityType": "Track",
    "nonce": "0xdbfe1a7d20fb3ecec5576f0ea45f3190baf6ee670621af67d09ec19c4483b943",
    "signature": "0x80b1b6216f98ea1afeed51b71d2ba2b2e3d8201b3ad2721346dd6e0133de607e7529e679bfa1ce19de555aec15801587a88c4f5839d7667c00b80a52145cadf21b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}