{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x294e6f7adbadecd1db0cd9f2a336f22813ca64ea52ba2042aa2a2e48ed8213a8",
    "signature": "0xa730de8f6ad8aa522fc0d6452a2867a3ca92678da93490fcd0c750dec007df1f321bd5edddbd338df13fbe1630ad76683165594ebce44f7efd734ce2f866ebf81b",
    "signer": "0x2A25841877cdB566b098A5579fe0ebC0AE53bB10",
    "userId": "211917910"
  }
}