How to get author name?

https://api.myanimelist.net/v2/manga/154739?fields=authors{id,first_name,last_name}

{
    "id": 154739,
    "title": "Ryuu ni Kou: Nie no Otome no Koufuku na Mi no Ue",
    "main_picture": {
        "medium": "https://cdn.myanimelist.net/images/manga/3/308876.jpg",
        "large": "https://cdn.myanimelist.net/images/manga/3/308876l.jpg"
    },
    "authors": [
        {
            "node": {
                "id": 38942,
                "first_name": "Yamori",
                "last_name": "Michikusa"
            },
            "role": "Story"
        },
        {
            "node": {
                "id": 68337,
                "first_name": "",
                "last_name": "Yukijirushi"
            },
            "role": "Art"
        }
    ]
}

GET https://api.myanimelist.net/v2/people/2009?fields=id,first_name,last_name,main_picture

{
    "id": 2009,
    "first_name": "Shinichirou",
    "last_name": "Watanabe",
    "main_picture": {
        "medium": "https://cdn.myanimelist.net/images/voiceactors/3/48770.jpg"
    }
}