Hi Jay, it looks like you're using the /1/oauth2/token_from_oauth1 endpoint to get an OAuth 2 access token from an OAuth 1 access token.
Based on the response you shared, that's working correctly. The "access_token" value there is the OAuth 2 access token.
OAuth 2 access tokens are different from OAuth 1 access tokens in that OAuth 2 access tokens only have one part, whereas OAuth 1 access tokens have two parts (a key and secret).
Once you have this OAuth 2 access token, you can use it to call both API v1 and API v2 using the OAuth 2 protocol for bearer tokens. I.e., you can just add an "Authorization" header with value "Bearer ACCESS_TOKEN_HERE".
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