{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0x43c45d2069c4b555ea0cd4e21c3395db147c3b1d5ec5fb373cc1f4f8fe1da8b8",
    "signature": "0xdde74d448fe59816c6592a5e3ff63c9a44efc1d691a661643bcb493abac407ec7a864cca3413cbe7a13c98d5fc12e68697a2a1170b0d0475a7c6bec93247e6fd1c",
    "signer": "0x7fB23CaDa61ACB0c4fCc650FDE57c3B812d4A5f4",
    "userId": "66130"
  }
}