sub·scrip·tion

/səbˈskrɪp.ʃən/ /səbˈskrɪp.ʃən/

noun

the action of making or agreeing to make an advance payment in order to receive or participate in something.

"the newsletter is available only on subscription"

formal

a signature or short piece of writing at the end of a document.

"he signed the letter and added a subscription"