curl command or simulation of a POST message

I would like a command I can run in bash to simulate a pin on pinterest. Given a hard coded url, image url, pinterest account (token?), etc... the command would simulate the pin. This command can be one line, multiple lines or a .sh script. I am open to the same code in perl, java or ksh. You'll need a pinterest account and to sniff the HTTP message when pinning a picture on your pinterest wall/group. I will have to test the code before I can settle the project.