{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0xb236d5f6f5251337e45e3465b6461f2045b2226faf4092c9c1a575e80be98555",
    "signature": "0xda52c2a31304221eac77d8a581bfbc7bfe6f9c9f0160a6634f719aa434c0fb220bb2af95b2403b476fdc2fb2f65f5f9219a670cf33031bcc8af54a644f57e39f1c",
    "signer": "0x020819dBA653525cf3F8069104a51B241BfC46E1",
    "userId": "1967"
  }
}