Get a template's content, to load it for editing. With campaign_id, the location's details are filled into the merge fields; if that campaign's text channel has a template, you get that template instead of smsTemplateId, with [landingPageUrl] set to the channel's landing page link. Returns the template.

Prerequisites: a bearer token and the template's id (value in GET /api/v1/campaign/template/sms/list). Optional: a campaign id (campaign_id).

Authentication: Account token. The template must belong to your account tree or be a shared (global) template (otherwise 422), and campaign_id must be one of your campaigns.

Rate limit: none.