API returns 500 only when POST is from Snaplogic

i’m having a problem while making a POST request to Pivotal Tracker API.
i make the exact same request from Postman and it works. But when i request from Snaplogic it returns 500. I really don’t know what might be wrong with Snaplogic, i suppose the snap is correctly configured by me, as seen on the screenshot below.
These are all the parameters i need to pass:

POST https://www.pivotaltracker.com/services/v5/projects/{id}/stories
X-TrackerToken: XXXXX
Content-Type: application/json

name: Test Story Created by API