settings in json files - an easy example... this can be nested, also pscustomobjects can be nested

create_settings.ps1

################################################
#
# SCRIPT ROOT
#
################################################


# script root path
if ($MyInvocation.MyCommand.CommandType -eq "ExternalScript")
{ $scriptPath = Split-Path -Parent -Path $MyInvocation.MyCommand.Definition }
else
{ $scriptPath = Split-Path -Parent -Path ([Environment]::GetCommandLineArgs()[0]) }

$settings = [pscustomobject]@{
    template = "value a";
    data = "value b";
    attachments = @("array content A";"array content B"); # array
}


################################################
#
# PACK TOGETHER SETTINGS AND SAVE AS JSON
#
################################################

$json = $settings | ConvertTo-Json -Depth 8 # -compress

$json

$json | Set-Content -path "$( $scriptPath )\settings.json" -Encoding UTF8

read_settings.ps1

################################################
#
# PREPARATION / ASSEMBLIES
#
################################################

# Load scriptpath
if ($MyInvocation.MyCommand.CommandType -eq "ExternalScript") {
    $scriptPath = Split-Path -Parent -Path $MyInvocation.MyCommand.Definition
} else {
    $scriptPath = Split-Path -Parent -Path ([Environment]::GetCommandLineArgs()[0])
}

# Load settings
$settings = Get-Content -Path "$( $scriptPath )\settings.json" -Encoding UTF8 | ConvertFrom-Json

# ...