Need to approve or reject the bell notification using REST API

Hi,

We have a requirement where we have to create popup item that is done and now we want to approve or reject that created popup item using REST API.

Found one REST api which is:

/fscmRestApi/resources/11.13.18.05/atkPopupItems/{MessageId}/action/processOutcome

But there is no request payload mentioned or values which can be passed to perform this operation.

Can anyone please help me on this.

Thanks,

Sailesh