{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "319049",
    "entityType": "Track",
    "nonce": "0x9c98d13a29477521736301a289e808662552de11ba26b5e3b663731a56721a69",
    "signature": "0x936bed3162a5e53fd470e9f161c743e0f99477c2af2243c0d8e045299cdb68a5585f0e248629b48dd459693a88107273ed76a10612b949a6cc810583d10431e71c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}