VOICE

    
        POST /tts/3/multi HTTP/1.1
        Host: api.infobip.com
        Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
        Content-Type: application/json
        Accept: application/json
        
        {  
           "messages":[  
              {  
                 "from":"12345",
                 "to":[  
                    "41793026727",
                    "41793026731"
                 ],
                 "audioFileUrl": "http://www.example.com/media.mp3"
              },
              {  
                 "from":"98765",
                 "to": ["41793026785"],
                 "text": "Hello world!",
                 "language": "en"
              }
           ]
        }