How do I use the discord webhook to send a direct message to the player?

here is the code i've made:

local webhook = 'webhook here'
local HS = game:GetService('HttpService')

game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function(player)
    local randomskinnum = math.random(math.random(1,5), math.random(5,10))
    print(randomskinnum)
    local message = {
        ['content'] = player.Name.. ' got a number of '.. randomskinnum
    }
    local msg = HS:JSONEncode(message)
    HS:PostAsync(webhook, msg)
end)

For now, it can only send messages in a channel but I want to know how I can make it send a direct message to a certain user.