Can’t provide a good example right now on phone but look at nimbleparsec package on hex. It’s brilliant for parsing all sorts of input.

This is one approach to get started; see below for notes about why it’s brittle:

iex(20)> Regex.scan(~r/"([^"]*)":"([^"]*)",?/, s, capture: :all_but_first)
[
  ["ClassNotationDocumentUrl", ""],
  ["VesselId", "40775"],
  ["IMONo", "9866718"],
  ["Currentname", "LOWLANDS CRIMSON"],
  ["VesselGuid", "a5379088-2c7d-42d8-bdf5-c5677ce5c1d2"]
]

The brittleness of this solution is from subexpressions like [^"]* - if the data ever contains " characters as part of a value this parser will break, as it doesn’t implement any kind of escaping.

I usually do something like this:

Enum.reduce(input_list, %{}, fn item, acc ->
  [key, value] =
    item
    |> String.replace("\"", "")
    |> String.split(":")

  Map.put(acc, key, value)
end)

For each item in the list, get rid of the quotation marks, split at the colon, and then put them into a map (or struct if the keys are always the same). Note how Elixir’s pattern matching allows us to easily assign key and value variables from the result of the pipeline.