[API-users] Downloads API predicate format

Hi all, I am trying to create a downloads file using the GBIF Occurrence Download API, but I'm not getting the expected result. I want to pass in a dataset key from which I want all occurrences. The predicate I defined is this one: { "creator": "bartaelterman", "notification_address": ["bart.aelterman@gmail.com"], "predicate": { "value": "7d5a76b9-819f-4fb8-aab0-664d4089aa54", "key": "DATASET_KEY", "type": "equals" } } I've also set the following headers: Content-Type:'application/json, Accept: application/json Yet, I get a 500 response from the API. Am I doing something wrong in my predicate definition? Thanks, Bart