How to get the UCM document ID of a file using the content ID via REST/SOAP?

Summary:

What is the REST/SOAP webservice used to obtain the document ID based on the provided content ID in UCM? I am designing an OIC integration flow where content ID will be a request parameter, which in turn will be used to read the contents of the corresponding file.

Content:

Using the below REST API helps to read the contents of the UCM file, but the request payload accepts only the document ID. It will be helpful if there was any way to directly get the file content using content ID or any way to obtain the corresponding document ID using the content ID.