{
   "type": "Undo",
   "signature": {
     "type": "RsaSignature2017",
     "signatureValue": "VU9AmHf3Pus9cWtMG/TOdxr+MRQfPHdTVKBBgFJBXhAlMhxEtcbxsu7zmqBgfIz6u0HpTCi5jRXEMftc228OJf/aBUkr4hyWADgcdmhPQgpibouDLgQf9BmnrPqb2rMbzZyt49GJkQZma8taLh077TTq6OKcnsAAJ1evEKOcRYS4OxBSwh4nI726bOXzZWoNzpTcrnm+llcUEN980sDSAS0uyZdb8AxZdfdG6DJQX4AkUD5qTpfqP/vC1ISirrNphvVhlxjUV9Amr4SYTsLx80vdZe5NjeL5Ir4jTIIQLedpxaDu1M9Q+Jpc0fYByQ2hOwUq8JxEmvHvarKjrq0Oww==",
     "creator": "http://mastodon.example.org/users/admin#main-key",
     "created": "2018-05-11T16:23:45Z"
   },
   "object": {
     "type": "Announce",
     "to": [
       "http://www.w3.org/ns/activitystreams#Public"
     ],
     "published": "2018-05-11T16:23:37Z",
     "object": "http://mastodon.example.org/@admin/99541947525187367",
     "id": "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity",
     "cc": [
       "http://mastodon.example.org/users/admin",
       "http://mastodon.example.org/users/admin/followers"
     ],
     "atomUri": "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity",
     "actor": "http://mastodon.example.org/users/admin"
   },
   "id": "http://mastodon.example.org/users/admin#announces/100011594053806179/undo",
   "actor": "http://mastodon.example.org/users/admin",
   "@context": [
     "http://www.w3.org/ns/activitystreams",
     "http://w3id.org/security/v1",
     {
       "toot": "http://joinmastodon.org/ns#",
       "sensitive": "as:sensitive",
       "ostatus": "http://ostatus.org#",
       "movedTo": "as:movedTo",
       "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
       "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
       "focalPoint": {
         "@id": "toot:focalPoint",
         "@container": "@list"
       },
       "featured": "toot:featured",
       "conversation": "ostatus:conversation",
       "atomUri": "ostatus:atomUri",
       "Hashtag": "as:Hashtag",
       "Emoji": "toot:Emoji"
     }
   ]
}
