1) Create queue qTestREST1 & qTestREST2

2) Send from Postman to AEM's queue (qTestREST1), check result in queue.
   /QUEUE/queue-name

3) Send from Postman to AEM's topic (tpR), queue subscribe topic, check result in queue.
   /TOPIC/topic-string

4) How to set headers for message's TTL, DMQ eligible, etc. Check result in queue.
Solace-Time-To-Live-In-ms: <milli-seconds>
Solace-DMQ-Eligible: [true|false]

5) Check headers directly in Try-me.

Reference:
https://docs.solace.com/API/RESTMessagingPrtl/Solace-REST-Overview.htm

HTTP Request-Target
https://docs.solace.com/API/RESTMessagingPrtl/Solace-REST-Message-Encoding.htm

Solace-Specific HTTP Headers
https://docs.solace.com/API/RESTMessagingPrtl/Solace-REST-Message-Encoding.htm#_Toc426703633