I'm trying to work with the Advanced REST Client of Google. I installed the extension, and I can work with it. Now I wanted to use a JSON-file as input for my payload.
The JSON-file looks as follows :
{"UserName":"", "UserPassword":"","SetDebug":true}
The Content-Type is set to application/json.
But when I try to send the request I get the following error:
{ "Message": "The request entity's media type 'multipart/form-data' is not supported for this resource." }
What am I doing wrong? Can anyone help me?