{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd30768065b387705f0e914c29f63067f56fbde11ae76d473f98a46557e33afdb",
    "signature": "0xb5d1834da9b97c893d2086e27883afbc57fa6782468e8424171759797267842d7eb29d67fb72deda382a505e9e0dc39480b8709e475dca32e24581afb36c4a081c",
    "signer": "0xbf2C76E9a58c7F66D25c8EE7edE947F1eda1e57b",
    "userId": "768244776"
  }
}