{
  "manageEntity": {
    "action": "Save",
    "entityId": "1922751444",
    "entityType": "Track",
    "nonce": "0x0860365a3e5cf90aaf1ad6e39ca0b98afece98b14932bc07b72eb6a3f9f6cc89",
    "signature": "0xc0b2c5d9e62bbc044b807b7342c0bdb32621177d72a9d6d24b18047e29068ebb7f9bfcfc46631d16936846781f513688a57aa88d54bfc0c079dc550411df7eaf1c",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}