{
  "manageEntity": {
    "action": "Save",
    "entityId": "651755",
    "entityType": "Track",
    "nonce": "0xaf1470b2e69c67f96b02fa42cb182a0633968dbe55889a9aa8ec09ba24e71ffa",
    "signature": "0xc0051a3a9afbe172979ecf03c146dab1cfe5d265fca113e6e00dc67dfd901f9713f2acf0df5db25729abd7fee1fd0a52574c70ee7529926a3e714ff4d70710461c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}