{
  "manageEntity": {
    "action": "Save",
    "entityId": "1165815717",
    "entityType": "Track",
    "nonce": "1786729590500254694",
    "signature": "0xf2d65ae3af837ac853fc6518cadec366f9b5dcb14877c98dc2e6a2bde0d99759016df1db115d6149c073a00bfecb4d051f3334aa2cd0161ab35839bcda430c041c",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}