curl --request POST \
  --url https://api.shoppex.io/dev/v1/tickets/{uniqid}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "message": "<string>"
}
'

{
  "data": {
    "id": "<string>",
    "uniqid": "<string>",
    "shop_id": "<string>",
    "customer_email": "<string>",
    "invoice_id": "<string>",
    "invoice_uniqid": "<string>",
    "subject": "<string>",
    "status": "OPEN",
    "priority": "LOW",
    "message_count": 123,
    "last_message_at": 123,
    "closed_at": 123,
    "created_at": 123,
    "updated_at": 123
  }
}