curl --request GET \
  --url 'https://api.keyapi.ai/v1/threads/fetch_user_info?username=lilbieber' \
  --header 'Authorization: Bearer <YOUR_API_KEY>'

{
  "code": 0,
  "message": "success",
  "data": {
    "user": {
      "pk": "67027868801",
      "text_post_app_is_private": false,
      "biography": "",
      "text_app_biography": {
        "text_fragments": {
          "fragments": []
        }
      },
      "account_badges": [],
      "username": "lilbieber",
      "friendship_status": null,
      "profile_pic_url": "https://instagram.fmex11-3.fna.fbcdn.net/v/t51.2885-19/573323465_1219825463302212_7278921664109726296_n.png?stp=dst-jpg_e0_s150x150_tt6&efg=eyJ2ZW5jb2RlX3RhZyI6InByb2ZpbGVfcGljLmRqYW5nby4xNTAuYzIifQ&_nc_ht=instagram.fmex11-3.fna.fbcdn.net&_nc_cat=1&_nc_oc=Q6cZ2QE8nZskOhqMMo_oSXTTX2H7f2QGZvrnS9ao9WhJ3dq2XzyiOK43m8epOwEY59pjYC16cyQPF5QxvNCqkkrZD_-N&_nc_ohc=2tyZ8HJj7tUQ7kNvwF6xIMC&_nc_gid=-CmVzTekUWiQqLyMqRLuyQ&edm=APs17CUBAAAA&ccb=7-5&ig_cache_key=YW5vbnltb3VzX3Byb2ZpbGVfcGlj.3-ccb7-5&oh=00_AfxGoVvRVjccCT76nNVsisDKCznsOohlvAGlrkbtT_yAIQ&oe=69B5522A&_nc_sid=10d13b",
      "follower_count": 15295167,
      "profile_context_facepile_users": null,
      "hd_profile_pic_versions": [
        {
          "height": 320,
          "url": "https://instagram.fmex11-3.fna.fbcdn.net/v/t51.2885-19/573323465_1219825463302212_7278921664109726296_n.png?stp=dst-jpg_e0_s150x150_tt6&efg=eyJ2ZW5jb2RlX3RhZyI6InByb2ZpbGVfcGljLmRqYW5nby4xNTAuYzIifQ&_nc_ht=instagram.fmex11-3.fna.fbcdn.net&_nc_cat=1&_nc_oc=Q6cZ2QE8nZskOhqMMo_oSXTTX2H7f2QGZvrnS9ao9WhJ3dq2XzyiOK43m8epOwEY59pjYC16cyQPF5QxvNCqkkrZD_-N&_nc_ohc=2tyZ8HJj7tUQ7kNvwF6xIMC&_nc_gid=-CmVzTekUWiQqLyMqRLuyQ&edm=APs17CUBAAAA&ccb=7-5&ig_cache_key=YW5vbnltb3VzX3Byb2ZpbGVfcGlj.3-ccb7-5&oh=00_AfxGoVvRVjccCT76nNVsisDKCznsOohlvAGlrkbtT_yAIQ&oe=69B5522A&_nc_sid=10d13b",
          "width": 320
        },
        {
          "height": 640,
          "url": "https://instagram.fmex11-3.fna.fbcdn.net/v/t51.2885-19/573323465_1219825463302212_7278921664109726296_n.png?stp=dst-jpg_e0_s150x150_tt6&efg=eyJ2ZW5jb2RlX3RhZyI6InByb2ZpbGVfcGljLmRqYW5nby4xNTAuYzIifQ&_nc_ht=instagram.fmex11-3.fna.fbcdn.net&_nc_cat=1&_nc_oc=Q6cZ2QE8nZskOhqMMo_oSXTTX2H7f2QGZvrnS9ao9WhJ3dq2XzyiOK43m8epOwEY59pjYC16cyQPF5QxvNCqkkrZD_-N&_nc_ohc=2tyZ8HJj7tUQ7kNvwF6xIMC&_nc_gid=-CmVzTekUWiQqLyMqRLuyQ&edm=APs17CUBAAAA&ccb=7-5&ig_cache_key=YW5vbnltb3VzX3Byb2ZpbGVfcGlj.3-ccb7-5&oh=00_AfxGoVvRVjccCT76nNVsisDKCznsOohlvAGlrkbtT_yAIQ&oe=69B5522A&_nc_sid=10d13b",
          "width": 640
        }
      ],
      "eligible_for_text_app_activation_badge": false,
      "hide_text_app_activation_badge_on_text_app": false,
      "full_name": "Justin Bieber",
      "is_verified": true,
      "id": "67027868801"
    }
  },
  "requestId": "dc124c8f-5851-4acb-8b47-39cdcd89b073"
}