select('config') ->fields('config', ['data']) ->condition('collection', '') ->condition('name', 'core.entity_view_display.block_content.basic.default') ->execute() ->fetchField(); $display = unserialize($display); $display['third_party_settings']['layout_builder']['sections'][] = [ 'layout_id' => 'layout_onecol', 'layout_settings' => [], 'components' => [ 'some-uuid' => [ 'uuid' => 'some-uuid', 'region' => 'content', 'configuration' => [ 'id' => 'system_powered_by_block', ], 'additional' => [], 'weight' => 0, ], ], ]; $connection->update('config') ->fields([ 'data' => serialize($display), 'collection' => '', 'name' => 'core.entity_view_display.block_content.basic.default', ]) ->condition('collection', '') ->condition('name', 'core.entity_view_display.block_content.basic.default') ->execute();