{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0x7b05265c89c0decd384ee40a0f716950ac92b30e30babd222a1722662ab23dc1",
    "signature": "0x590e6e3284c8416bf7a3e132fb28bde2b2573ce0fe8647564cc63006d0fa5f8c68d67a7c015667adf7e5d3bc305502f7113037dc0a49b0584b0c65cff2f922e31b",
    "signer": "0x7fB23CaDa61ACB0c4fCc650FDE57c3B812d4A5f4",
    "userId": "66130"
  }
}