{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "552930418",
    "entityType": "Track",
    "nonce": "0x2334c5158b5cebe1ff1c3a0bb740afe77372265e35d4eab7a6daedcf2e179549",
    "signature": "0xf583e98a906308cdb4ca93e4fdfc8159d8faa96b5ad918570d93e93942b543685ea539cbb407562ce9230aad58a51beeaff4cd8a326710994de2fb5861e8c0c21b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}