['data'=>[ 'courses'=> [ ['lowDbId'=> 1,'courseName'=>'English for beginners'], ['lowDbId'=> 5,'courseName'=>'English for beginners extra'], ] 'country'=>1 ] ];
Good, they threw off the formation of parameters for the API, it seems to be in PHP. Help translate this into a String type to get the generated parameter string.
PS: PHP do not know and PHP is not installed.