{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x319f670937a0324d770fb97d0be2d77726e29d89257efe7180ef6fd800ddad1e",
    "signature": "0x8b703bc694ac06c40205ca243a56d7fef96a6922d9fa9ba109ea917b8b2730b6613f47746a829d7560428c567726d3c42bc90121b8aa52ca14efb48f3d32cc8e1b",
    "signer": "0x705C3Be1F27A9694A390A0a58287440a6b43349E",
    "userId": "193978537"
  }
}