{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0xa845421374df296703f44c594d17e77a76371acb9071c59102eb81b543d414f2",
    "signature": "0x8332dc04c3eb4e5ac688d12f01a0c9b4dc0add418eec2f3fbb4bb8e3bd6f593d38d52ca548a6b5f013ac6db82b7837f9fca9b91e8d0142b05bd0317dab293f851c",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}