{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe408403cf6f0f9dcad1b0d0860b51279e58494051d0bf5c15dea1cfefc1204fb",
    "signature": "0x2dfe2d3dbddcf3c55681c242b2eef88166225ca71cae55edefda259b1ae19f11765c453b38eb8867705759c758b08a1b76f63cfe0c81834b3a9dbe623128adab1b",
    "signer": "0x81ae7764AC6c3AEd609eE256136C8B118Cab914a",
    "userId": "454051835"
  }
}