{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd9d9d4788806afeaa8ed1581e76d0294f9f5fadfa12a3b9eabaa2ae8f2b8dc56",
    "signature": "0x65446d3ba083b3983b97a4b6ace8a8818c5daae882a912ecc7deeec1b5b4c14c16c9ad14ba02ed8cf90b22a83c37cc458c74f89b64bee1013771cd3c05b555571b",
    "signer": "0xD04A0ed5A059A43F54219DFa892ed814587D533e",
    "userId": "256606542"
  }
}