{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090516634",
    "entityType": "Track",
    "nonce": "0x10ac8bf8d1374f0f876f374e5c46c3695b75393877ae962f262d72d0a6d78cd1",
    "signature": "0xc1941c2fe5cdcaf11aa2f4279ce8fe9b8d3b734ebe93032911fdb9d1cb11c9330ed9bdc5dccb4619062c4d5dda2dfed42d561e539bce6ff41c6836b6b4d6cd741c",
    "signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
    "userId": "930634116"
  }
}