{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1831424",
    "entityType": "User",
    "nonce": "0x16a57b7e707cdd8b30059b20a09ecf02898d6c5c44bcff34810bfd7705b9aebf",
    "signature": "0xa0099664b9a48385e6f98d7055693a71a617a9d25043d687e677bab0c5956b70470199a6d3570a905e10ebce0e21f3dc6d185db50696c8e24d684a68969357fe1b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}