What return method is appropriate for controller actions for SPA frontend?

  [HttpPost("{studyId}")]
  public async Task<ActionResult<NoteDTO>> CreateNote(int studyId, [FromBody] CreateNoteInput input)
  {
    Note newNote = new Note
    {...};

    _context.Notes.Add(newNote);
    await _context.SaveChangesAsync();

    var createdNoteDTO = new NoteDTO
    {...};

    return CreatedAtAction(nameof(CreateNote), new { id = newNote.Id }, createdNoteDTO);
  }