{
  "manageEntity": {
    "action": "Save",
    "entityId": "693692111",
    "entityType": "Track",
    "nonce": "0x8ffa6f730e889d88ebb5696a562d12b320242f41937427a4125149c004053acf",
    "signature": "0x257dee3c15788e6015c1cf20baec2f7d1f50c7268b2e894b4b512c5915f1e22d5b8dede31f0d8132252faf3253d58c369cc484c58633a54b2bb23007de11c4401c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}