Build a website with matatrader 4 signals

I want a website where user can register And they can offer their own trading signals in metatrader 4 platform, and others can copy trades his own account mt4. users can subcribir depositing his cabinet on the website. Users can deposit with, (credit card, Neteller, webmoney, Netbanx (China Union Pay). everyone should download an expert advisor for signal provider, and to copy a signal. the expert advisor communicates with the web site and see if the client has paid the signal to copy.