data=<image_process_call>
@image_url
<owner>@owner</owner>
<lang>en</lang>
<result_size>@result_size</result_size>
<result_quality>@result_quality</result_quality>
<methods_list>
<method>
<name>collage</name>
<params>template_name=@template_name;text=@text</params>
</method>
</methods_list>
<template_watermark>@template_watermark</template_watermark>
</image_process_call>
