Entry creation for multilevel model with media field

Thanks for following up on this. I have a large number of json files. Each json file has an array of items like below. Each item has a link to a binary file. I have created a matching Content Type in Strapi with a Media field for the binary file (DCM field below). Is there any example Node JS code to POST the data via the web service? I also have a C# program that needs to POST items to the web service.
Thank you.

[{
“gantry”: 359.978,

"table": 1.16016,

"collimator": 0,

"field_center": [0, 0],

"bb_center": [0.0800456, -0.039692],

"bb_offset_from_field_center": [0.0800456, -0.039692],

"DCM": "\\\\rovarianimage\\VA_TRANSFER\\QA\\2.IGRT\\Edge\\20-10-21_06-57-09\\RI.1.2.246.352.62.1.4740950000664281560.9116964684468108453.dcm",

"user": "masencio",

"MV": true

},
… ]