Sorting a list of maps by date

payload = [
  %{
    company_id: 1,
    updated_at: ~U[2020-01-01 11:56:41.882841Z],
    name: "Garland",
    state: :pending,
    user_count: 3
  },
  %{
    company_id: 2,
    updated_at: ~U[2020-01-01 11:56:48.308506Z],
    name: "Garland",
    state: :started,
    user_count: 3
  },
  %{
    company_id: 3,
    updated_at: ~U[2020-01-01 06:04:00.279130Z],
    name: "Garland",
    state: :done,
    user_count: 3
  }
]

I am attempting to sort a list of 3-4 maps by date. This is what I have tried so far with no luck:

data
|> Enum.sort_by(fn each ->
  d = each.updated_at
  {d.year, d.month, d.day}
end)

Alternatively, how can I sort by state? Essentially I want to grab the step it is on (e.g completed if it exists, or started if that’s the latest one, or pending if that’s the latest one. )