{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "895771712",
    "entityType": "Track",
    "nonce": "0x7494b4b134cf8f51a188b5694e238730b37a939cd76048c5f21f67a49ffe4119",
    "signature": "0xb1e09fd0b162be99aebbd31021f943cd49455ef6d7d63ca06cdc58bcfde49cdb4ddcfaba28ce326d8582e33e8784141b6281360ec8a64a7f02942abb4ec789891c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}