mutation CreateConversationMemberships($input: CreateConversationMembershipsInput!) {
  createConversationMemberships(input: $input) {
    clientMutationId
    conversation {
      avatarUrls
      bookmarkedAt
      id
      lastChatAt
      lastMessage {
        actorType
        artifact {
          __typename
        }
        assets {
          __typename
        }
        chatCard {
          __typename
        }
        conversation {
          __typename
        }
        createdAt
      }
      lastReadMessage {
        actorType
        artifact {
          __typename
        }
        assets {
          __typename
        }
        chatCard {
          __typename
        }
        createdAt
        lastReplyAt
      }
    }
    errors
  }
}

{
  "input": {
    "conversationId": "id",
    "userIds": [
      "id"
    ]
  }
}

{
  "data": {
    "createConversationMemberships": {
      "clientMutationId": "string",
      "conversation": {
        "avatarUrls": [
          "string"
        ],
        "bookmarkedAt": "value",
        "id": "id",
        "lastChatAt": "value",
        "lastMessage": {
          "actorType": "COHOST",
          "artifact": {
            "__typename": "Artifact"
          },
          "assets": [
            {
              "__typename": "Asset"
            }
          ],
          "chatCard": {
            "__typename": "ChatCard"
          },
          "conversation": {
            "__typename": "PrivateConversation"
          },
          "createdAt": "value"
        },
        "lastReadMessage": {
          "actorType": "COHOST",
          "artifact": {
            "__typename": "Artifact"
          },
          "assets": [
            {
              "__typename": "Asset"
            }
          ],
          "chatCard": {
            "__typename": "ChatCard"
          },
          "createdAt": "value",
          "lastReplyAt": "value"
        }
      },
      "errors": [
        "string"
      ]
    }
  }
}