Retrieve all existing webhook v2 configurations

[
    {
        "name": "demo",
        "parent_system_id": "webhook_v2",
        "workflow_config": {
            "events": [
                {
                    "enabled": true,
                    "body": "{\n  \"incident_start\": \"{{incident.start}}\",\n  \"assigner\": \"Assigned by {{assigner.username}}\",\n  \"assignee\": \"Assigned to {{assignee.username}}\",\n  \"primary_alert_host\": \"{{primaryAlert.tags.host}}\",\n  \"priority\": \"{{incidentTags.itd_priority_1}}\",\n  \"nested_values\": {\n      \"double_nested_values\": {\n          \"primary_alert_check\": \"'{{primaryAlert.tags.check}}'\",\n          \"incident_updated\": \"{{incident.updated_at}}\"\n      }\n  }\n}",
                    "headers": "\"x-client-id\" : \"{{ primaryAlert.tags.host }}\"\n",
                    "path": "/incident/{{incident.id}}",
                    "authorization": "Bearer {{incidentTags.itd_applications_1}}",
                    "method": "POST"
                }
            ],
            "config": {
                "base_url": "string",
                "expects_callbacks": true
            }
        }
    }
]