curl --request PUT \
  --url https://api.firma.dev/functions/v1/signing-request-api/workspace/{workspace_id}/settings \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "signing_request_email_header": "<string>",
  "signing_request_email_body": "<string>",
  "team_email": "jsmith@example.com",
  "timezone": "<string>"
}
'

{
  "workspace_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "signing_request_email_header": "<string>",
  "signing_request_email_body": "<string>",
  "team_email": "jsmith@example.com",
  "timezone": "<string>"
}