It is just sample data. You need to replace query:
| makeresults
| eval _raw=" api
/api/v1/testuser1
/api/v2/testinfo1"
| multikv forceheader=1
| eval api=replace(api, "/[\w]+$", "/unique_value")
with
<your base search> | eval api=replace(api, "/[\w]+$", "/unique_value")
... View more