{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1254728785",
    "entityType": "Track",
    "nonce": "0x939def06521b13bbbbf11d4b49188bddd7d34d76d44827d3704796f55eb1ab6b",
    "signature": "0x0d30a0eda6adbe01c1e072622ff297124021531afe24fac46f9b69c3b9b4f3ec41372239a46184b834301c791671c4acee16e41ceb729776c61bbe1ea2eb91c81c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}