{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "136064",
    "entityType": "Track",
    "nonce": "0x29869eaf0e1618e6d2dfaa9dbddd1d86cfef4d12a9ab02d928684d320e44b71d",
    "signature": "0x81fa4d73fad9f9f7c1d0361889daa52f82ac7f4ba9184c75ae01f0cc7e55268e42a9b9d9294b4efad306e61613999ef30882d4b56bb6e7e47846af87284fbec01b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}