Synthesize Speech
POST {{aws_polly_base_url}}/v1/speech
Request Body
{"Engine"=>"string", "LanguageCode"=>"string", "LexiconNames"=>["string"], "OutputFormat"=>"string", "SampleRate"=>"string", "SpeechMarkTypes"=>["string"], "Text"=>"string", "TextType"=>"string", "VoiceId"=>"string"}