{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xe9b3508ff38f42e2031ce1d69f4699be41e246c0f0aff04cdc79c9cab345dbc4",
    "signature": "0xc22379599de2a8d112d353abf5f02959bc41c78ca5650f569228ca5662e4873f108ddc9c091a6c8771bbfae467fa40038d1059322ccdb528d1c151ccd29349041b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}