Attempting to extract a particular value from a nested JSON response in Powershell.

Im kind of new to using PSObjects but have some experience with REST APIs. I am performing a GET method on a REST endpoint and getting the following back.

{
    "value":  [
                  {
                      "id":  2370,
                      "customFields":  [
                                           "@{id=60; caption=Mu0026S Agreement Status ; type=Text; entryMethod=List; numberOfDecimals=0; value=Active}",
                                           "@{id=68; caption=Maintenance Renewal Notes; type=Text; entryMethod=EntryField; numberOfDecimals=0}",
                                           "@{id=81; caption=Reseller; type=Text; entryMethod=List; numberOfDecimals=0}",
                                           "@{id=105; caption=Product Type; type=Text; entryMethod=List; numberOfDecimals=0; value=GoAnywhere}"
                                       ]
                  }
              ],
    "Count":  1
}

So far so, good but I am unsure of how to extract the “value” field which contains “GoAnywhere” from the final nested string.

I have tried this.

$agreementsResponse | ConvertFrom-Json | ForEach-Object{$_.value} | Select customFields

and it is getting me a single string in an Object.

customFields                                                                                                                                                                                                          
------------                                                                                                                                                                                                          
{@{id=60; caption=M&S Agreement Status ; type=Text; entryMethod=List; numberOfDecimals=0; value=Active}, @{id=68; caption=Maintenance Renewal Notes; type=Text; entryMethod=EntryField; numberOfDecimals=0}, @{id=8...

Any help would be mucho appreciated