post https://api.signeasy.com/v3/template/
Upload a document to Signeasy and set it up as a template. A template is how you can send out multiple signature requests based on a single document using the create or send an envelope endpoint. You can also automate and pre-fill data onto the document at the time of signature request using merge fields.
Once you upload a template successfully using this endpoint, you can programmatically create roles, merge fields, and place fields using the update template endpoint.