{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb976b383edf5d913c09de0d28810a971194fff8a8863d65af2568ff66fe4424c",
    "signature": "0xc740d3c0c04f75f922b178a33d4ebf6cca4e7fe4f1451a699c7f2f62786fbf1c2d6ca781f7c876f1092d1c3617ea48d87b9c04cc1a96ab2bdaed43b247fbd8621b",
    "signer": "0x03803b915E0AAee5C2c5aA3510FCc5b4DBb0FF46",
    "userId": "629975650"
  }
}