CORE_ATTACHMENT_DOWNLOAD_AS_BASE64 CORE Endpoint
  /rpc/core/?method=CORE_ATTACHMENT_DOWNLOAD_AS_BASE64  
 

Download an attached file in a base64.

 
  PARAMETERS TYPE NOTES
  id Numeric Attachment link ID
  object Numeric Mandatory if you are using Relationship Manager Security
  RETURN  
  Base64 Contents of the file in base64