{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1898020351",
    "entityType": "Track",
    "nonce": "0xbf4e43720c643edff7ba46a81edca4f40aa4dde0a0bae758b9dd6bd8528d4631",
    "signature": "0xdafd1c099e4b4dd9a650979940bb816ff14ed565cc385f89d5457c84c882609222a742d5483201e3129ae6899279183b51e497367abe112df0c63bef06d014031c",
    "signer": "0xeF3a4ae2Ce361f5d0081c77F1Ab5F660D0796F05",
    "userId": "916022076"
  }
}