{
  "manageEntity": {
    "action": "Save",
    "entityId": "1192577776",
    "entityType": "Track",
    "nonce": "0xd024049d5d6e93b3998ba87afe82bbb1b4be13e713415c9e6ce76e3fb47874c6",
    "signature": "0x0df212bc6e42341458a47600016cbd8435a8e93cb0a92733d3f2eb1ffa7ba6cb5e0d400fbe51a72b3d9dbea7544701ab3b186d08bedc01383b7635dc448930d61b",
    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}