{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xea76efa2d4d3eac1f8689152cebb733650bf5dd4713a175f689fa193ffec81e3",
    "signature": "0x68e1c132c4c4165979ccf0be1fbdc03bd2166b082b8da5c247f1dfdf6b0e0d2a484e41a243ed93da0a11cb940fc15c974452205e5d0f75b0f14c37e58514b4c31b",
    "signer": "0x4Ba22D0ea80CC44bD88A8cEdAB57764A9c4bC414",
    "userId": "711823641"
  }
}