{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "214425",
    "entityType": "Track",
    "nonce": "0x00f95ac04fb8e279204b0a981ecf6a070b0b66cbc9c5313d582d2104304f333d",
    "signature": "0x2f644d419f6706e69f95235e27715354430961678aaf4fe7aea0f84912b14a143f3ace7864fd12d0952543a0172a73fc11cd3200f8b1ac516497f34ed2c2295b1b",
    "signer": "0x77716b11b242ACc386023E99B7e647CaCCcbb8b6",
    "userId": "126786"
  }
}