{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0x3311490aeda488d5ab2c222a331b8cec138f7b08875264244b87aa60f437b18f",
    "signature": "0xf8856b9ad18df2ed0b61e679e0fd11fc4355ea8f6c41e374a83f6788a4df2a5c76044a502d032d9d89b0082876804965fde7bb8aa480fae1e18a4d97cf2c04201c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}