What's the pattern for getting data from a POST to a worker function?

Just setting up a super simple function for my nuxt app, the siganture looks like this

export function onRequestPost(context) {
// Some code
}

export function onRequestPost(context) {
// Some code
}

export function onRequestPost(context) {
// Some code
}

export function onRequestPost(context) {
// Some code
}

Looks like

context.request.body

context.request.body

context.request.body

context.request.body is a

ReadableStream

ReadableStream

ReadableStream

ReadableStream

'm just hitting

localhost:8788/getPresignedAssetUrl

localhost:8788/getPresignedAssetUrl

localhost:8788/getPresignedAssetUrl

localhost:8788/getPresignedAssetUrl from Postman and sticking data inside a JSON body