{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124195",
    "entityType": "User",
    "nonce": "0xcbeedbbf03b40e4cd382192443172658ce2b9ebceac1089069033a72ba79c979",
    "signature": "0x76f6febf4c1a6372f22e7308e37ab2ecb7ae9c196830b143721bbcf77193b95e7c5b3dcc6f46f9d14899db531e36b60e6d999884e3964f75c55f7df05436d1f51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}