{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1040734",
    "entityType": "Track",
    "nonce": "0x066d7c9750bf0a7c17a4ec3458f068e53755dbdc287c4f2e192511027ea64619",
    "signature": "0x5267cce282b23e2df5bacdb1d914f1fbc5ff015487ae30da51b1f96ec839a23e1e8e716316a2d05fce18f720c0383c3bd991ba5256fa2be8f3e6fb1b038c25ac1c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}