PUT call get a 400 response back

[Deleted user]

I am trying to Archive a ProjectVersion programmatically using the following rest api:

http://jira/rest/api/2/version/10074

the payload I send in this put call is following: {"Id":"10074","archived":true}

However, I am receiving a "400 Bad Request" response back from the Jira server.

a get call to the same URL listed above downloads the following content:

{"self":"http://jira/rest/api/2/version/10074","id":"10074","name":"AAPT_221_CP11","archived":false,"released":true,"releaseDate":"2009-02-04","userReleaseDate":"Feb 04 2009"}

Any idea what I am doing wrong in the payload here?

Thanks.

[Deleted user]

Additional info: I did a GET then updated just the boolean field and PUT the string back, and still received the same 400 Error. So this time there should be no malform in my message. What else am I missing?