$uri_base = 'https://MYDEVORG.okta.com'
$apikey = 'MYAPIKEY'
$uri = $uri_base + '/api/v1/users/?filter=status eq "STAGED"&limit=200'
$method = 'GET'
$headers = @{'Accept'='application/json';'Content-Type'='application/json';'Authorization'="SSWS $apikey"}

PS /> $json = Invoke-RestMethod -Uri $uri -Method $method -Headers $headers -FollowRelLink
PS /> $json.Count
200
PS /> $webreq= Invoke-WebRequest -Uri $uri -Method $method -Headers $headers
PS /> $webreq.RelationLink

Key  Value
---  -----
self https://MYDEVORG.okta.com/api/v1/users?limit=200&filter=status+eq+%22STAGED%22


PS /> $webreq.Headers.Link
<https://MYDEVORG.okta.com/api/v1/users?limit=200&filter=status+eq+%22STAGED%22>; rel="self"
<https://MYDEVORG.okta.com/api/v1/users?after=OKTAUSERID&limit=200&filter=status+eq+%22STAGED%22>; rel="next"
PS />

> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      6.0.0-beta.9
PSEdition                      Core
GitCommitId                    v6.0.0-beta.9
OS                             Linux 4.4.0-43-Microsoft #1-Microsoft Wed Dec 31 14:42:53 PST 2014
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0