slackblocks-3.1.0: test/spec/fixtures/valid/elements/multi_select_user_with_initial_users.json

{
    "type": "multi_users_select",
    "action_id": "multi_users_select",
    "initial_users": [
        "U064B5H1309",
        "U063JR973UP"
    ],
    "placeholder": {
        "type": "plain_text",
        "text": "Select one or more users"
    }
}