{
  "manageEntity": {
    "action": "Save",
    "entityId": "201936",
    "entityType": "Track",
    "nonce": "0x138b316d1c82f63062eff364b4cbe89578f289ae41c6ac535ccbd663fdbccc1b",
    "signature": "0x6c9a72c19f0489a2014bcabb1e65b9fcc41c90809d368de400621f937320222074dbb6399fa9cce1fe4cc344f630f7b93ef92a6f09b537d8b2bd09559b66a9d11b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}