{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x97928c244dbc1c888b2cbb57e5f025b464d7527dd6296e0eaceb456fe49af816",
    "signature": "0x25e5bdfba9b085f29dd6b66e39946c4ca5b4323d5ec4f7c7ca30d02043f3a45429f1bee3c8c5990529c4324d5e16312f6f88ec6cfdbbc62fa65e4bb80130afc01c",
    "signer": "0xcFFbcec789772e42e8Fcaf9fC75B76Ee23C3B987",
    "userId": "706820462"
  }
}