{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6e4921a2928cfac62d0ff855fdbcb45fb1fd92c90311067b149c69399e9766c7",
    "signature": "0xa33fc3c8c52cc8941469150ffd6c9a94f2bd17e6c283f209214db0fb8d4a806b7d1d05e695e6f63e4ee2070c170f9f7ab1e78502496053daf6cf7f5037904e431c",
    "signer": "0x02624B847405E297b9E71e08B236875Bcc52D6C0",
    "userId": "708546764"
  }
}