result = client.tiktok.user_info_from_secuid(
    sec_uid="MS4wLjABAAA..."
)

user = result.data["user"]
print("Username:", user["unique_id"])
print("Nickname:", user["nickname"])
print("Followers:", user["follower_count"])
print("Posts:", user["aweme_count"])
print("Likes:", user["total_favorited"])