Custom handling of binary data - REST API

[Platinum_ar]

I know it is possible to pass binary data to AwareIM into an exposed REST API endpoint.

viewtopic.php?f=1&t=11766&p=54462

myPicture.png#aa2342bb33..................

The question is to @awareim_support.
Our client's partner already implemented the handling of the API, but he did it wrong. He misses "myPicture.png#" in his API requests before the base64 string. The filename is transferred in a separate JSON attribute.
Is it possible to modify this behavior (plugin?) so that AIM will merge binary data and filename right before the standard flow?
So, as a result, the request will be appropriately constructed "myPicture.png#aa2342bb33................" by using the filename and base64 properties of a JSON object.

Thanks

[aware_support]

Please write to us about this and attach a BSV