How to search for activities filtering by customer number

Summary:

I want to perform a Get Activities REST API request, filtering the results by a specific Customer Number (customerNumber placeholder, customer_number property label).

Content (required):

**This post was created as part of a How to Service Request (SR)

Version (include the version you are using, if applicable):

22C

Code Snippet (add any code snippets that support your topic, if applicable):

N/A