{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674466799",
    "entityType": "User",
    "nonce": "0x301081e7c17c26472040b5dab5df1b7010b0cf9f1c866dddf4bef64fd44dcc6d",
    "signature": "0xab038bd7f68d03d600ae5adf99eb9830a88ed8a4fcee073358cf0cd9d763d06267fbdb15a81a879ac5268f1ea8fb26c3e772f3860b06be45acddebd30df995c81c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}