{
  "manageEntity": {
    "action": "ViewPlaylist",
    "entityId": "538837114",
    "entityType": "Notification",
    "nonce": "0xc94111d1992247986aac2ee36886a9821bc210ecde29ee14bc06b2f085e953b4",
    "signature": "0xd77fcc2fcf2ccaaeeeedd674a52858b1e59621e54cccb8a7dfecf2a4db4093287751d40c6914b57b9d746dd86459abd27bc50c7a11c7aa5a465cec5df48a62cd1c",
    "signer": "0x020819dBA653525cf3F8069104a51B241BfC46E1",
    "userId": "1967"
  }
}