Sending image in base64 format via maxurl object?

Hi there

I wonder if max can send image in base64 format to a 3rd party app locally by maxurl? I am not web developer and I have no knowledge for base64 encoding and any common knowledge of the common usage of http post.. any ideas how should i encode the image in max? thank you so much.

https://www.lobe.ai/docs/export/export

here is the example code from lobe in json format:
{
"method": "POST",
"headers": {
"Content-Type": "application/json"
},
"body": {
"image": "<base64 image>"
}
}