{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024355",
    "entityType": "Track",
    "nonce": "0x5b536a4a40623039cfa7e09031266bbc880ceb98fcf8ea10d745dd0e370263df",
    "signature": "0x17cca56851ede77cc381627abc330171d7886c7109e8590696d4070b2871bbac747a684f7cb18f39ab64bf61ff8ada3715e57e721eb8ef3d752c8b555f6378ae1b",
    "signer": "0x0CD9dcF9fcCa28bC63B06fF92A4214f7Ed04b0aa",
    "userId": "733078358"
  }
}