{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1620481591",
    "entityType": "Track",
    "nonce": "0xb7599b9618c7ed27f202c670e4af5d392fd23422a2dfdd69add4b3dfca566036",
    "signature": "0x481ac31d0102cb06e270cc388846711d39948a889de452d5fc467884ef6783a2583b30c6d4b452692a8119b3aad10264f4d7cb3f7bcc5c144e6296d7dbb4e4da1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}