{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "1422880728",
    "entityType": "Notification",
    "nonce": "0x0a7e2a7fef061d97b3867dc87100f0281ce5bb57051b8df8ac044f92da1fc3e2",
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    "signer": "0x6687B667182cfdc5646f5AEB14a9945c9b1d3A6B",
    "userId": "100"
  }
}