{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "997538",
    "entityType": "Track",
    "nonce": "0x6b4a38e6d2ec793fc828443c0840bc0b7945f6269fcba5077fe279f80536df42",
    "signature": "0x5438a0b854bb1df44b2b045f2917713db87cf270027a9cb8bfa07bc577ee1dd37dc2b40ddab1c98d3089b238ee7ebac6f2f60db31583c72bef937c36e33f84251c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}