{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "497069",
    "entityType": "User",
    "nonce": "0x9a7945bad3251544d1c20f7499af48613b97804a83407f7a12be0bfeee35bc47",
    "signature": "0x45f8d8db179fa5a603117675c007f8c3ef9edca6ca4bf395e392cd940205e7e969942cee65094d6c0a335c3d6d2ee27f181d040281afb23620a891a4cf54f8a21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}