On December 31, 2014, Green Company finished consultation services and accepted in exchange a promissory note with a face value of $500,000, a due date of December 31, 2017, and a stated rate of 8%, with interest receivable at the end of each year. The fair value of the services is not readily determinable and the note is not readily marketable. Under the circumstances, the note is considered to have an appropriate imputed rate of interest of 6%. Prepare the journal entry to record interest revenue at the end of the first year.