Investigating discrepancy between Grafana and Shortcut user IDs in outgoing webhook

Good morning everybody,
I’m trying using the Grafana incident outgoing webhook to create tickets in Shortcut. However, I’ve encountered an issue: the userID in the payload doesn’t match the Grafana user ID.
After reviewing the API documentation, I couldn’t find the source of this userID. Is there an API endpoint that lists users with their corresponding userIDs?

can you share what this webhook looks like.

https://grafana.com/docs/grafana-cloud/alerting-and-irm/incident/configure/integrations/configure-outgoing-webhooks/

  "version": "v1.0.0",
  "id": "webhook-out-6400aeb030670e95",
  "source": "/grafana/incident",
  "time": "2023-03-02T14:12:00Z",
  "event": "grafana.incident.updated.severity",
  "incident": {
    "incidentID": "5",
    "severityID": 1
    "labels": [],
    "isDrill": false,
    "createdTime": "2023-02-27T15:06:25.243788Z",
    "modifiedTime": "2023-03-02T14:12:00.730047Z",
    "createdByUser": {
      "userID": "grafana-incident:user-63f8b6204887f793",
      "name": "admin",
      "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
    },
    "closedTime": "",
    "durationSeconds": 860734,
    "status": "active",
    "title": "55",
    "overviewURL": "/a/grafana-incident-app/incidents/5/55",
    "roles": [
      {
        "role": "investigator",
        "description": "Leads the investigation (has their full-time attention)",
        "maxPeople": 1,
        "mandatory": true,
        "important": true,
        "user": {
          "userID": "grafana-incident:user-63f8b6204887f793",
          "name": "admin",
          "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
        }
      },
      {
        "role": "observer",
        "description": "Watching the incident",
        "maxPeople": 0,
        "mandatory": false,
        "important": false,
        "user": {
          "userID": "grafana-incident:user-63f8b6204887f793",
          "name": "admin",
          "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
        }
      },
      {
        "role": "commander",
        "description": "Owns the incident (has their full-time attention)",
        "maxPeople": 1,
        "mandatory": true,
        "important": true,
        "user": {
          "userID": "grafana-incident:user-63f8b6204887f793",
          "name": "admin",
          "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
        }
      }
    ],
    "taskList": {
      "tasks": [
        {
          "taskID": "task-63ff1bf465deb38c",
          "immutable": false,
          "createdTime": "2023-03-01T09:33:40.759215968Z",
          "modifiedTime": "2023-03-01T09:33:55.286168752Z",
          "text": "111",
          "status": "done",
          "authorUser": {
            "userID": "grafana-incident:user-63f8b6204887f793",
            "name": "admin",
            "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
          },
          "assignedUser": {
            "userID": "grafana-incident:user-63f8b6204887f793",
            "name": "admin",
            "photoURL": "<https://www.gravatar.com/avatar/46d229b033af06a191ff2267bca9ae56?s=512&d=retro>"
          }
        }
      ],
      "todoCount": 0,
      "doneCount": 1
    },
    "summary": "Resolved with no comment",
    "heroImagePath": "/api/hero-images/default_org/mC0B9YIgrBH3Hf9jvnKsvalHT90QtlODeiXDd2aLgRsflEZrRHGS5ld2KfIAbndglMIHiKSR04FPRPBpS34DA182rpeBxF9MSypELoU7nyOzXS09YenaCUtBZEzCi1xd/v1128/5.png",
    "incidentStart": "2023-02-20T15:06:26Z",
    "incidentEnd": ""
  }
}```