In this video I will show how to manage Azure Digital Twins models and instances using Postman. How to use the ADT explorer is explained in my previous post: https://hernandezpaul.wordpress.com/2020/07/24/azure-digital-twins-and-adt-explorer-say-hello
In order to make the postman collection work you need to configure an environment as follows:
tenantId = your tenant Id, it could be found in the registered app
accessToken = will be populated withing a script
adtInstanceURL = the hostname of your ADT instance
clientId = as in your registered app
clientSecret = the one you generated in the registered app (see video)
scope = https://digitaltwins.azure.net/.default
You can find all the DTDL models and the postman collection in this repository:
https://github.com/pauldj54/adt-agrifood
The Swagger file of the ADT Management API:
Paul Hernandez playing with Data 
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Nice article. Have a question though, which REST operation corresponds to ADT Query API here?
Hi Maithili,
In the video I queried the twin using the ADT explorer. You can see how the query path works in the swagger file of the ADT dataplane : https://github.com/Azure/azure-rest-api-specs/blob/master/specification/digitaltwins/data-plane/Microsoft.DigitalTwins/preview/2020-05-31-preview/digitaltwins.son Do you know what a swagger file is?