{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c23fdc76eff018f1b2920f9464a8b2a619cbd97ff1efdf781ab6886fa840129",
    "signature": "0xd7a8e289a1da45a19c9b3922b20931ab3cef5afae3eee5a5fb9f85fbe5063dda01aabd4b08239750ad79fea71b699e752cff804cbd897f78e254e05d781a5d441b",
    "signer": "0x03dB479a8E887D4696e53C007b70b3EA318049d2",
    "userId": "773573937"
  }
}