{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1907628479",
    "entityType": "Track",
    "nonce": "0x8f10f6f37ae238cb69d7ce670eee6691a2b5b54435bfa8acc563411f2d522b74",
    "signature": "0x1ce510876bd6e776e23c7eb48de6bf13e16b23d14467636107df7b59ae87ebe03bdf70e2a42b31835654dadd2f28af2d3df8f89dcc518bfc4a597805485c7e721c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}