{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8fc63dbe1fa79c734404395724b0408c497b18721babf211d594504d325ee32",
    "signature": "0xad9eeffd305ede88d2bf8d8f19c1622dbd23910351a884e9178f4905a55838a67d67711b3f11bbd32c31d90f1bfa243d69a02cc711be22c190e67c626b5438cc1c",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}