From where I live you can't.  That's like earning money and not paying income taxes.  There are probably ways to do it but all of them are illegal.  The only legal way probably to do it, is to move to a tax sheltered country (isle of man?) and then conduct business there within the guidelines of theor tax laws.  Other than that shady dealings that involve skirting the tax law all of which I don't recommend.  You won a ton, pay your dues and enjoy the winnings legally.