{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e0cdbee9b6dea1845fb0bcf96abbdaad7db8bc7b2a5a5ff173711839e5adab1",
    "signature": "0x685a092e81d0b1b91f85388005bf2282e3a6834ff8cb75a760167db002f89d817af56b01f2eae73bb06bc4caee5741be17d16c746e474983d7ab21e8d5e618e41b",
    "signer": "0x0570674e97DE2560cb7c94240BAe25BCAA447a9A",
    "userId": "85928258"
  }
}