{
  "manageEntity": {
    "action": "Save",
    "entityId": "992340192",
    "entityType": "Track",
    "nonce": "0x415f4dfd37a65064ff15cb050614612573024bf638a642c8b4f54e2f06370b16",
    "signature": "0x47603aaf1adf3cd76437f67ec109dc102a19e72c4a0bad432a200d4d8e4dd67a4f2f5eb2af9c456fe222593ebcf2904f8be89df8399f2d05c157281c3d4735c71b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}