SigningHub special flow actions

This section outlines some of the specific characteristics and required properties needed to use certain SigningHub actions correctly. The following explains additional special parameters and their usage.

Upload Document

This action requires File content as an input. For example, the content can be retrieved using the Get file content action from SharePoint. The user can select the desired file from a SharePoint site, and the retrieved content can then be used in the Upload Document action or any other SigningHub actions that involve files. Also it is recommended on X-source parameter to set "orig=powerAutomate" to identify the documents uploaded from PowerAutomate inside the SigningHub website.

Sign Document

This action requires a Base64-encoded image to be used as the signature. For example, the user can obtain the Base64 representation of the image they wish to use as their signature and provide it in the hand_signature_image parameter. Alternatively, Power Automate expressions can be used to generate the Base64 value directly from an image file within the flow.