attachment_multi_block.json

{
    "blocks": [
        {
            "type": "section",
            "block_id": "fake_block_id_0",
            "text": {
                "type": "mrkdwn",
                "text": "I like pretty colours"
            }
        },
        {
            "type": "section",
            "block_id": "fake_block_id_1",
            "text": {
                "type": "mrkdwn",
                "text": "I don't like pretty colours"
            }
        }
    ],
    "color": "#8800ff"
}