everyone!

I have two REST endpoints:

/projects

/games

Each project can have multiple games and of course, I can create projects and games by making POST requests to each one of them. No big deal.

But I want to create a “template instantiation” endpoint, where I send a full hyerarchy of the thing like this and the backend take care of creating each entity on their respective tables with correct relationships:

{
    "name": "name of the project",
    "description": "description of the project"
    "games": [{
        "name": "name of the first game",
        "description: "description of the first game"
    },
    {
        "name": "name of the second game",
        "description: "description of the second game"
    }]
}

What would be the correct way on the REST pattern to make this happen?