'Authentication method is OAuth 2.0 by Client Credentials grant type using react js to get response using post method

I have to use the fetch method to call the post API.

The customer application will first make a HTTP POST call to:

POST /v1/oauth/accesstoken HTTP/1.1
Host: example.test.com
grant_type=client_credentials
&client_id=xxxxxxxxxx
&client_secret=xxxxxxxxxx

Does anyone know to get the response for API?

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