{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871265248",
    "entityType": "User",
    "nonce": "0x5e26b383bcd0a35a6e942c34d70e3f51b3192417491dd271120655436961fd82",
    "signature": "0x6d32418824144daa8fc53d4356346dce8d954a601729f19e44b63e580cf4ef8a68e047053e36fc42616230683f354f2c074f6db942b9dbef87ebc8fa9174a3381b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}