Data sent must be properly UTF-8 URL-encoded.  By default, browsers will properly encode POST calls. However, if you are writing your own client, you will need to make sure to set the HTTP Content-Type header to application/x-www-form-urlencoded if you are form-encoding your request bodies or application/json if you are JSON-encoding your request bodies.  If you are uploading a file as part of your request, you will need to specify multipart/form-data.
In some cases, clients do not support PUT and DELETE methods. In these cases, you can override the actual HTTP method by appending the _method parameter via a POST request. Valid values are PUT and DELETE.
Unless otherwise stated, request parameters have the following restrictions:
URL Encoding
curl 'https://api.impact.com/Mediapartners/<AccountSID>/Actions' \
	-X POST \
	-H 'Content-Type: application/x-www-form-urlencoded'
	-d 'OrderId=MyTestOrderId'Method Overloading
curl 'https://api.impact.com/Mediapartners/<AccountSID>/Actions/ActionId=1017.3295.188200' \
	-d '_method=DELETE' \
	-G