{
  "manageEntity": {
    "action": "Save",
    "entityId": "707356",
    "entityType": "Track",
    "nonce": "0x4dd80ace7a409a114460967d391dc3363344af188ea5efc1be838e66dabc96df",
    "signature": "0x9c6f62d6188a9b881c15dfde5fc5547d4894c1bd12e1cdd0712bbd9cd849700f3e2a167b925b36387a16d51eb5d19b7737d4f55ed7c19de91f4228ea8165db4f1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}