{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1215547825",
    "entityType": "Track",
    "nonce": "0x90af09acccbf457039347ac8e73d20a00fc9ba2daa96e19d1b5e69c05068e9a5",
    "signature": "0xbf9c35620c8aac33cda5e28ce8b5745d568ea8fa9a50ac319cdd3e184781c1d73e21f38d222e11259b84d6252a4f0e272e4205fba9eb56a8c85c56f1060f92b71b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}