{
  "manageEntity": {
    "action": "Save",
    "entityId": "216806083",
    "entityType": "Track",
    "nonce": "0xd3b0aa82d51584e4722595c8b4b05c1725e17b6c14c0691302fa24bd679495ba",
    "signature": "0x95909d8a8b03ffd8cd1367fbeaa7e779ac83e2ea203e844813b6cb8a38a035ab4d113964740517557a55df1c2077e15ec2cc1b3b924d96c5a0bbaeb7f45e4cff1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}