{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "541158",
    "entityType": "Track",
    "nonce": "0xf3a15c7613915a504b10a65b15f0870e379b2ddc6d7bc203be9a733c74678330",
    "signature": "0x56a96eb4a9b82589ccd8e607d330083e2121d2a64d832c4c75694bb3fd37e99f10c5760052f2f4cdc24f948921cacc49c7435a19a7d22487ffd110ef7f99de081b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}