def update(self, campaign_id, data):
self.campaign_id = campaign_id<EOL>return self._mc_client._put(url=self._build_path(campaign_id, '<STR_LIT:content>'), data=data)<EOL>
Set the content for a campaign.

:param campaign_id: The unique id for the campaign.
:type campaign_id: :py:class:`str`
:param data: The request body parameters
:type data: :py:class:`dict`