{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "863807752",
    "entityType": "Track",
    "nonce": "0xeca0b886f05ccc046660cbd48e1c41faee1fec87caab66ae7cecd0bc0344471e",
    "signature": "0xfd8f2e697b381e9319d5b417952b69ed02380374850190039371dde7f287dcc3166121407c827e75a4e69616b3637d07092efdb11f7be227f76a6d5446c43b4e1c",
    "signer": "0x303e25A9367325722bF3a74330CBe56813466816",
    "userId": "186524153"
  }
}