Managing mementos from multiple urls as data.frame

[tafiti]

When get_mementos() spits back its finds from the API on one single url, the data is 7X3 (rows:columns).
At times it is easier to feed Wayback a list of 10 urls at a go for speed and accuracy. The output however is quite complex as each url spits out a 7X3.
Have you had this issue and how did you use that data. My use case is to extract two rows under the link column and discard everything else.
Perhaps an easier way -- can I only request specific objects under get_mementos()?