This is one of many protocol behaviors described in ActivityPub.

Identifier

urn:uuid:4edf6768-c751-448f-96ac-4ef44cb4291f

Content

The inbox MUST be an OrderedCollection.

Origin

prefix The inbox is discovered through the inbox property of an actor's profile.

The inbox MUST be an OrderedCollection.
 
suffix The inbox stream contains all activities received by the actor.

https://www.w3.org/TR/activitypub/

JSON

{
  "id": "urn:uuid:4edf6768-c751-448f-96ac-4ef44cb4291f",
  "type": "Behavior",
  "uuid": "4edf6768-c751-448f-96ac-4ef44cb4291f",
  "content": "The inbox MUST be an OrderedCollection.",
  "origin": {
    "source": "https://www.w3.org/TR/activitypub/",
    "section": {
      "id": "https://www.w3.org/TR/activitypub/#inbox",
      "branch": [
        5,
        2
      ]
    },
    "selector": {
      "type": "TextQuoteSelector",
      "exact": "The inbox MUST be an OrderedCollection.\n",
      "prefix": "The inbox is discovered through the inbox property of an actor's profile.\n",
      "suffix": "The inbox stream contains all activities received by the actor.\n"
    }
  },
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://socialweb.coop/ns/testing/context.json"
  ]
}