feat: add recipient roles (#716)

Fixes #705

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Co-authored-by: Lucas Smith <me@lucasjamessmith.me>
Co-authored-by: David Nguyen <davidngu28@gmail.com>

apps/marketing/src/app/(marketing)/singleplayer/client.tsx

@@ -158,6 +158,7 @@ export const SinglePlayerClient = () => {
     readStatus: 'OPENED',
     signingStatus: 'NOT_SIGNED',
     sendStatus: 'NOT_SENT',
+    role: 'SIGNER',
   };
 
   const onFileDrop = async (file: File) => {