API Endpoint for "Interested in"

Hi I am trying to find the endpoint that shows the data of the column “interested in”. However, I can’t find it in both of the following urls.

1- “Log in****”
2- “Log in*****”

Make a call to https://organization.pipedrive.com/v1/dealFields?api_token=

Here, find out what the “key” is for the “Interested in” field, and then look for that key in your other API calls.