After you log in to the account which you need to use via API, You can generate an API token 
but first you need to create API Key as below screenshots:












Then, the Token will be created automatically.
Copy and save it in a safe place for your reference and now you can test the API service by postman application as below -





The documentation if needed 

Attached is Postman's sending collection.

feel free to get back to us if any further assistance is required.


Contact: support@deewan.sa