{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136160",
    "entityType": "Track",
    "nonce": "0x31e572095112438737c29d9c3255ba142f575b8fcfd137d2c693a7b45911a5a8",
    "signature": "0x488452f51932ecde74c6bb6177daab0a66b250897bdae0017252ed5d2b3e6a5f46fde3aab30ada432a279a9c75da8a0648b2fbd59517ee92cb667d04c75e294c1c",
    "signer": "0x13f8ca0832087662A9bA298e1F708853B8615826",
    "userId": "990836999"
  }
}