{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "772742",
    "entityType": "User",
    "nonce": "0x0d55de4b4bcd8314a4374a9a9e31a2b9eebc21c9ba564772c6377ab53f149337",
    "signature": "0x88998b7f5091c6514de91a2c34d044793f6cfb1ebb349c454d8f0b7b336c6af40bd1b23219766dbdaaa7b8bfe061a58bc93f1917debc7d05ed517cf1c645f2cc1b",
    "signer": "0x69f11622ae51A55c34462DAfaAa5b4E7e77AB644",
    "userId": "513195827"
  }
}