{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1015205868",
    "entityType": "Track",
    "nonce": "0x88c2906e75710c4e1c56982b93d9d44bbdf5feb946307177f50bd903a7d9919a",
    "signature": "0x7940e4ef56dc8574d9bdf5f128b6920a0077a7b63c3012451567ad7635a2ad436317b8362b9cba4768855c737fb5eef597ff61286e394a11cc35a6c56dd069031c",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}