{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756544",
    "entityType": "User",
    "nonce": "0xe75541798888cfa8af92fe50a65c42b2b1100fd6d1b4ba6e287d5c1caf5a705e",
    "signature": "0x35b1ab20df316a21d969a05840f2f96eb1b450dcc2f00292b6b6b379aacc824d0d9bb68a9d0a380543306d42171b15ab317d46fba88dda696ed4e07ac46ea9fd1b",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}