Cause
The audience has an unknown mode, mixes selectors with channel or tenant, exceeds the maximum number of selectors, or references groups or people that do not exist or are not current.
What to do
Fix the audience with the modes and references on the API page.
application/problem+json
{
"type": "https://masnet.com/developers/errors/invalid_audience",
"title": "Invalid audience",
"status": 422,
"detail": "...",
"code": "invalid_audience",
"correlation_id": "..."
}