{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab23adb2981626147aa24c206ff9e9e98964726d0e0b0cd867802c062a2f2b86",
    "signature": "0xd55cc1f44251909ce6fe869b43b4bebf2ec735c6733c8d2005004506f1e6ddd6693b8a0c48c56c2a9d5f54cb3fe4c4e05d563a8128fe8cb6bba6f9c701ea933e1c",
    "signer": "0xaF7e1E037FC865Cf0F8b693008900402789b4138",
    "userId": "542937414"
  }
}