Receive Webhook

Question

I have a system in VB.NET where I need to receive webhook from the financial system that generates charges and receives payments. Every API integration is already working with this service, I just need to receive the webhook every change of transaction status to do the procedures in my database and so not have to consult every x transaction in x time.

Their documentation says that: "Transactional Webhook This webhook triggers and sends a POST notification to each change in the status of a transaction. It applies to all forms of payment and comprises the entire life cycle of a transaction."

I never developed receiving webhooks and while researching about, I had some questions.

In integrating with the Payments API, when creating a new charge for example, send a POST to the API. When consulting a charge, I send a GET. All this using Webrequest.

For Webhook, it is possible to do the same, and instead of sending, receive the POST on a page with Webrequest?

This is an example code structure I use to send a POST:

' ENVIO DA REQUISIÇÃO E OBTENÇÃO DO RETORNO
Public Sub SendRequest(uri As Uri, jsonDataBytes As Byte(), contentType As String, method As String, requisicao As String)

    System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls12

    Dim request As WebRequest

    request = WebRequest.Create(uri)
    request.ContentLength = jsonDataBytes.Length
    request.ContentType = contentType
    request.Method = method
    request.Headers.Add("X-API-KEY", buscaChaveAPIProducao())
    'request.Headers.Add("X-API-KEY", buscaChaveAPITeste())

    Using requestStream = request.GetRequestStream

        requestStream.Write(jsonDataBytes, 0, jsonDataBytes.Length)
        requestStream.Close()

        Try

            Using responseStream = request.GetResponse.GetResponseStream
                Using reader As New StreamReader(responseStream)

                    Dim objResponse As Object = reader.ReadToEnd()

                End Using
            End Using

        Catch ex As WebException
        End Try

    End Using

End Sub