{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "2139954063",
    "entityType": "Track",
    "nonce": "0x51fa1c1a2ebb9717dd05ed889a99c13f3950d21fcdd9d71f3a69cd6f9bafa73a",
    "signature": "0x1c2c82eb67cbba807cb107355510edab990fc79c2cc58ff47fbb470a3a36b517629fb3af927239dbde038ea0bd7ed3c8b60130449597e47b080bd119852139471c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}