Send Pipe Id as a number on a webhook

I have a list with all the pipe ids I have to process (as numbers, like the pipe url), but when I send the request via webhook, the pipe_id arrives as some kind of hash.
My webhook configuration:

1mutation {
2createWebhook(input:
3{
4clientMutationId: "1",
5actions: ["card.create", "card.move"],
6name: "Integration Name",
7email: "email@email.com",
8pipe_id: 302682925
9url: "https://...",
10})
11{
12  clientMutationId
13}}

And this is what I'm receiving in my API:

1{
2  "Data": {
3    "Action": "card.move",
4    "From": { "Id": 123123, "Name": "phase 1" },
5    "To": { "Id": 321321, "Name": "phase 2" },
6    "MovedBy": {
7      "Id": 123,
8      "Name": "Usar Name",
9      "Username": "user-name",
10      "Email": "email@email.com",
11      "AvatarUrl": "https://..."
12    },
13    "Card": { "Id": 123123, "Title": "Test title", "PipeId": "2jz9X0eK" }
14  }
15}
16

This "PipeId": "2jz9X0eK" needs be the pipe number (302682925).

How can I retrieve this information in the correct format?