{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d0b1c6eeec55192956c8a13106cb783c1cfc3771ed5d0f4e7cc9b9e8ba1d9c8",
    "signature": "0xb33e127f2719ff4f8b43fab9b4795573fac6d38eef67f2a5ff74dee912e65231109ff8e56257e978722cd57f4f17174515c58554acb43643ed3fb6fd48104a1a1b",
    "signer": "0xB4f2dc89aEeEcbBb8CD3b75B00C26CAA1DBDE567",
    "userId": "392735788"
  }
}