Get a deploy key
GET {{baseUrl}}/repos/:owner/:repo/keys/:key_id
RESPONSES
status: OK
{"id":1,"key":"ssh-rsa AAA...","url":"https://api.github.com/repos/octocat/Hello-World/keys/1","title":"octocat@octomac","verified":true,"created_at":"2014-12-10T15:53:42Z","read_only":true}