How do you unlock the doomsday heist in gta online?

The only verified source supplied is a Wikipedia entry on Grand Theft Auto Online, which outlines the game's basic release dates, setting, and general multiplayer features. This entry does not mention the Doomsday Heist or any unlocking requirements. Because the evidence does not contain details on this heist, no reliable steps can be given here. If you need instructions, you may want to consult official Rockstar guides, community forums, or reputable gaming websites that cover GTA Online content updates.