This is per an appearance on the podcast The Town With Matthew Belloni (via Consequence), where Jaysen recalled an instance of Dylan meeting with director James Mangold for a table read of the script.

Guess if you want a thing done well, you got to do it yourself. Bob Dylan Tested A Complete Unknown Script by Performing as Bob Dylan

From 'Dylan Goes Electric,' the book that inspired the film, to Todd Haynes' experimental 'I'm Not There,' here's what to read and watch to go deep on Dylan