mutation CreateMessage($input: CreateMessageInput!) {
  createMessage(input: $input) {
    clientMutationId
    errors
    message {
      actorType
      artifact {
        createdAt
        description
        html
        kind
        status
        summary
      }
      assets {
        aspectRatio
        assetStyle
        contentType
        fileSize
        id
        imageUrl
      }
      chatCard {
        id
        kind
        parameters
        textHtml
        title
      }
      conversation {
        avatarUrls
        bookmarkedAt
        id
        lastChatAt
        lastMessage {
          __typename
        }
        lastReadMessage {
          __typename
        }
      }
      createdAt
    }
  }
}

{
  "input": {
    "conversationId": "id",
    "text": "string"
  }
}

{
  "data": {
    "createMessage": {
      "clientMutationId": "string",
      "errors": [
        "string"
      ],
      "message": {
        "actorType": "COHOST",
        "artifact": {
          "createdAt": "value",
          "description": "string",
          "html": "string",
          "kind": "string",
          "status": "string",
          "summary": "string"
        },
        "assets": [
          {
            "aspectRatio": 1.5,
            "assetStyle": "string",
            "contentType": "string",
            "fileSize": "string",
            "id": "id",
            "imageUrl": "string"
          }
        ],
        "chatCard": {
          "id": "id",
          "kind": "string",
          "parameters": "value",
          "textHtml": "string",
          "title": "string"
        },
        "conversation": {
          "avatarUrls": [
            "string"
          ],
          "bookmarkedAt": "value",
          "id": "id",
          "lastChatAt": "value",
          "lastMessage": {
            "__typename": "ChatMessage"
          },
          "lastReadMessage": {
            "__typename": "Message"
          }
        },
        "createdAt": "value"
      }
    }
  }
}