The JSON format natively doesn\'t support binary data. The binary data has to be escaped so that it can be placed into a string element (i.e. zero or more Unicode chars in d
Refer: http://snia.org/sites/default/files/Multi-part%20MIME%20Extension%20v1.0g.pdf
It describes a way to transfer binary data between a CDMI client and server using 'CDMI content type' operations without requiring base64 conversion of the binary data.
If you can use 'Non-CDMI content type' operation, it is ideal to transfer 'data' to/from a object. Metadata can then later be added/retrieved to/from the object as a subsequent 'CDMI content type' operation.