{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0xb209b918e390320ac595d7b478e0927bb4ef974823fa7f85c6a27925c0021d8f",
    "signature": "0xb08e97306caf39bf2dee065770d8a42222546e8d9bfc29b8ac1bd97fa98489d466c64061082b5b72c12be2082bf2fb9666bd7e860826417e2d1c29b94b87f2121c",
    "signer": "0x7fB23CaDa61ACB0c4fCc650FDE57c3B812d4A5f4",
    "userId": "66130"
  }
}