{
  "manageEntity": {
    "action": "Save",
    "entityId": "1718035947",
    "entityType": "Track",
    "nonce": "0x5df0b13a238ad3e193cf4ba351201e819c8e1ddadd09a60eea6581d74d305ff9",
    "signature": "0x9012f24624aacb03950e89687a4c685525f3e11fe16ec09a1b1a96990feb46810a00000dcc3c9b6880b94a1b44623dd87cbfde214f18f9f67d94d9eeaa0d75d21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}