Webhooks for task added/moved/removed/deleted from a section

Hi,
I am trying to catch all events when task is created at a section or moved to the section + all events when task is moved from the section or deleted from it.
According to this topic I’ve tried to next filter:

"filters": [
        {
            "action": "added",
            "resource_type": "story",
            "resource_subtype": "section_changed"
        },
        {
            "action": "removed",
            "resource_type": "story",
            "resource_subtype": "section_changed"
        }
    ]

This way I can get the id of a story when task is moved.
The problem is that when I use https://app.asana.com/api/1.0/stories/{story_id}, I recive only text description from which to which section task was moved:

{
    "data": {
        "gid": "STORY_ID",
        "created_at": "date",
        "created_by": {
            "gid": "USER_ID",
            "name": "USER_NAME",
            "resource_type": "user"
        },
        "previews": [],
        "resource_subtype": "section_changed",
        "resource_type": "story",
        "source": "web",
        "target": {
            "gid": "TASK_GID",
            "name": "TASK_NAME",
            "resource_type": "task"
        },
        "text": "moved this Task from \"SECTION_NAME_1\" to \"SECTION_NAME_2\" in PROJECT_NAME",
        "type": "system"
    }
}

Am I doing something wrong and is there way to know ID of sections, not their names?

Much appreciated in advance!