{"type":"object","properties":{"signableContent":{"type":"string","description":"The content to be signed"},"confirmationMessage":{"type":"string","description":"A confirmation message to be displayed to the user on the mobile app"},"username":{"type":"string","description":"The username of the user who is performing the signing"},"source":{"type":"string","description":"The source of the content to be signed"}},"required":["signableContent","confirmationMessage","username","source"]}