Create a message for a given campaignpost https://localhost/v4/campaigns/{uid}/messagesSend a message through a campaign. Required scope: write_campaign_messages.Path ParamsuiduuidrequiredPodium unique identifier for campaign.Body ParamsCreate campaign message body paramschannelIdentifierstringrequiredIdentifies the Messenger channel. Must be a valid email address or a phone number. Non-US/Canada numbers must include the country code (e.g. +61 for AUS)Responses 200Successful response. defaultError response.CallbackUpdated 24 days ago