{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x02e1b33d7673472f619d47e08e225c91b35ca2e5782e84c7f8a77e2b8cd59f56",
    "signature": "0x146394f8b69b6fa7528df189a97d3871e05b8cb10d533b5bf19275502657ffab48f9640881199f302d5f2a8c36f5108cb45aaf482be2b0df8f59f6169dde56ca1c",
    "signer": "0xF623b3A237501F7AD70f3E063969743b886B5067",
    "userId": "563864758"
  }
}