curl --request POST \
  --url https://api.example.com/main-menu/messages \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "message_text": "<string>",
  "is_active": true,
  "sort_order": 0
}
'

{
  "id": 123,
  "message_text": "<string>",
  "is_active": true,
  "sort_order": 123,
  "created_by": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}