Powershell JSON

Ronald Lawrimore 

I don't think there is a direct way of parsing the inner fields to a PSCustomObject.

The following should do the trick and give you a PSCustomObject to work with:

# $JSON is the result from your Invoke-WebRequest
ForEach($entry in $JSON)
{
    $newFields = @()
    $rawFields = $entry.Fields
    ForEach($rawField in $rawFields)
    {
        $parameters = [PSCustomObject]@{}

        # Remove first 2 letters (as they are '@{') and the last '}'
        $rawField = $rawField.Substring(2, $rawField.Length - 4)

        # Parameters seem to be splitted by a ';'
        $rawParameters = $rawField -split ';'
        ForEach($pair in $rawParameters)
        {
            # Key = Value
            $split = $pair -split '='
            # Trim the start as after the ';' a space occurs
            $name = $split[0].TrimStart()
            # Skip empty pairs
            If([String]::IsNullOrEmpty($name))
            {
                Continue
            }
            $parameters | Add-Member -NotePropertyName $name -NotePropertyValue $split[1]
        }

        $newFields += $parameters
    }

    # Override original Fields entry
    $entry.Fields = $newFields
}