{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "789718487",
    "entityType": "User",
    "nonce": "0x81ed079f64212e2b6f142074d93fb8fdeba51dabc7a1b7c7309e5dc95adb4f61",
    "signature": "0x9072e2fe2b077fde659ef50adeb3fcd8dcc104dac94f90fa010657db3be565a26ea3b17261ed0ce044221cd520b96864fbca42c37a6ead77ee02d6574b71e20b1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}