XMP/XML for Workflow Improvement (HELP)

Hi, Guys! 👋

Recently there have been changes in the process that is carried out in my daily work and, therefore, this negatively impacts my workflow. Currently the whole process is done manually and that is what I want to automate since this is repeated hundreds of times weekly.

I've already created part of the script for this process but I've hit a wall.

Part of it generates an array like the following:

ChannelsInfo = [
	{
	"name":"BASE",
	"color":"0xffffff",
	"opacity":"90",
	"screen":"280"
	},
	{
	"name":"BLUE",
	"color":"0x0000FF",
	"opacity":"50",
	"screen":"255"
	},
	.
	.
	.
]

That information is then used to create a datasheet from a PSD file.

Reading documentation and forums I see that it is possible to create custom metadata for each PSD file using XMP or XML but in everything I've read I still can't find the correct structure to convert the given array to these languages programmatically and save it for later processing.

Can someone point me the right way with this or a better idea?

P.D.: Excuse my bad English, I am using Google Translator for this 😓