{
  "manageEntity": {
    "action": "Save",
    "entityId": "681856288",
    "entityType": "Track",
    "nonce": "0x319c26e86e5f487f23101e6302194055373458b255c4454a93c984e059fe1e07",
    "signature": "0xebda3611cdfc23a893fefe0d964fd8ddcefa5be858df5ab02ca8bf42144b847204b24700975d31540664f170a8c4d1d346a257ad6c2f7f4e2caaa88f0ff622cc1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}