{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1912cc7795bc269d2af4d2333f8ddb22e125ffececf56ea1fbed73811c4a3490",
    "signature": "0x3b8174e123b438b8f5ba3586b6e7621d63b07c9d7668aa34f456ddf5b754defc506f6ef800745cd53048c8a82c3713cd928cd59d883f13f8d10429511f58bae71b",
    "signer": "0x2AF4Cbd187E60f9d2aCB72E6F7b97e2515973e2A",
    "userId": "725963623"
  }
}