{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0x8cfcdc6c28d096160dc489a09b0ec3dd795ad2061e48424a0d24de57b530c85f",
    "signature": "0xe811644c811e985b502c166d57fb47e2ba125984ea69473fd13a474c0c3e8bc647754941ad03c8e109f332608bc5f4e4aec290a41776d16df82f2c52e2e68c051c",
    "signer": "0x020819dBA653525cf3F8069104a51B241BfC46E1",
    "userId": "1967"
  }
}