{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38c4d2b0540b69db8d1da05fd01910c5167a6c5c28a6596e22f52b29943900f3",
    "signature": "0x7a754b5e62dcb022016f80923e2e7690804dbb1e16c181ac3eb14c2d5db0e574051ea66cc87ba5c7885444fd99dc8d7da9dd5b6670b08faa72639ec4cd0e26e11b",
    "signer": "0x83aBe5aFbb055150B37ef48d75828C9b8BBd10D9",
    "userId": "249945325"
  }
}