curl --request POST \
  --url https://api.example.com/api/auth/setup-admin \
  --header 'Content-Type: application/json' \
  --data '
{
  "username": "<string>",
  "password": "<string>",
  "email": "<string>"
}
'

{
  "success": true,
  "message": "<string>",
  "user": {}
}