I've been struggling to use the update attachment endpoint. I'm rather confused about when you use the URL parameter that is optional as I keep getting the following error when using it:
```curl -X PUT \
-H 'Accept: */*' \
-H 'Accept-Encoding: gzip, deflate' \
-H 'Authorization: Bearer tokenGoesHere' \
-H 'Cache-Control: no-cache' \
-H 'Connection: keep-alive' \
-H 'Content-Length: ' \
-H 'Host: www.wrike.com' \
-H 'Postman-Token: 508f567d-5617-4313-ba6c-17665017f73a,4740c672-1811-42b0-a028-f0a9c21c2572' \
-H 'User-Agent: PostmanRuntime/7.15.2' \
-H 'cache-control: no-cache'
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