{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd89e482b92c809ab264fb9e6d5604d8854603cbfb0fddc02e849fe8dabed00a4",
    "signature": "0x20342045d6a5cea6eba7d93f7bdd8543ec8f734589614a035452277c7b88b56e61291dcc15b150d9a9cf1678cce692046e174ff843ca634cfffe478128aa6a451c",
    "signer": "0xC956D0174a8072B72068b1bEaC15ea892151EdAb",
    "userId": "746076660"
  }
}