curl --location 'https://api.studiointern.de//v1/cust/login' \
--header 'Authorization: <api-key>' \
--data-urlencode 'session_id=' \
--data-urlencode 'customer_id=' \
--data-urlencode 'pw=' \
--data-urlencode 'pw_is_base64='{
"message": "string",
"code": 0,
"data": null,
"token": "string",
"kID": 0
}