{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3991eb0ce96553afbe9e8e484802a101d71149147ef0cbecd550366ea4e2697",
    "signature": "0x09acd0d37db61038b11732f5f05f7c9291abaffea2c1007f8c3f3c6649da4514598cb7d856b93fc69df38f8052817b4ca6d82719435c8eef579a129862261a701b",
    "signer": "0xA7E96760F88c7Eaa4354b6988895d394ff5C739D",
    "userId": "411813392"
  }
}