{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53e9f58707e895574ac50ba561b91209fdc3a4a6a3c3da8fa3465b0846e1e61f",
    "signature": "0x2393b6c5b3eea1663cd07ea5260a10e824a821687f75a3180ba324cb6cc2a84a127830176ff963754ce61c4c0e21a915797cc978a74321270d1b39c33cc24cdf1b",
    "signer": "0xBC3a4391D9DD03cc29113FE4cEF53C1e5Fb9601B",
    "userId": "17925296"
  }
}