Roku DRM module sending incorrect Content Length

Hi, I am trying to play a DRM protected video, during which I am getting an error from my DRM license server saying that "Request body size did not match Content-Length".

On verification (at the server side), it's noted that the content length set by Roku in the request header is not matching the actual content size. Attaching my code sample here:

sub ShowVideoScreen(rowContent as object)
  m.videoPlayer = CreateObject("roSGNode", "Video") 

  testContent = CreateObject("roSGNode", "ContentNode")
  testContent.streamFormat = "dash"
  testContent.url = "https://x.y.net/movies/b79baaee22226492e6f986b9d6f42b50/169309/169309_hd.mpd?hdnea=xx&op=xx&user_id=xx&cid=xx&partnerId=xx&provider=xx&cid=xx"
  testContent.ShortDescriptionLine1 = "L1 Description"
  testContent.Description = "Description"
  testContent.StarRating = 80
  testContent.Length = 1972
  testContent.Title = "Title"

  drmParams = {
    keySystem: "Widevine"
    licenseServerURL: "https://mylicenseserver.com/v1/license?license-token=xx&secret-key-id=xx"
  }

  httpAgent = CreateObject("roHttpAgent")
  httpAgent.AddHeader("x-params", "xxx")
  httpAgent.AddHeader("x-user-token", "xxx")
  httpAgent.AddHeader("x-user-token-secret-key-id", "u01bf3e1521")
  httpAgent.AddHeader("x-session", "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.xxx.v-kw1oS2Iidt45TwnRQlxzEsFyrNrtOFs1hDmwJdUP0")
  m.videoPlayer.drmHttpAgent = httpAgent

  testContent.drmParams = drmParams
  m.videoPlayer.content = testContent

  ShowScreen(m.videoPlayer) 
  m.videoPlayer.control = "play"
end sub

license status: <Component: roAssociativeArray> =
{
    duration: 0
    keysystem: "Widevine"
    response: "{"requestId":"Self=1-674ed7dc-3de6ce4b668a73e327dbcae7;Root=1-674ed7db-5cabb6203a465f67418a90e8","error":"Something went wrong","message":"Request body size did not match Content-Length"}"
    status: 500
}

{
    category: "drm"
    clipid: 1
    dbgmsg: "buffer:loop:unset:DRM exception: Http error 500:extra:etype:buffer"
    drmerrcode: 0
    errcode: 9
    ignored: false
    source: "buffer:loop:unset"
}

How to debug this further? Is there a way to know how Roku is setting the content length field? How can I resolve this and what steps next?

Any help would be really appreciated. Thanks in advance.