curl --request POST \
  --url https://api.voice-agents.miraiminds.co/v2/call/web \
  --header 'Content-Type: application/json' \
  --header 'workspace: <workspace>' \
  --header 'x-private-key: <api-key>' \
  --header 'x-public-key: <api-key>' \
  --data '
{
  "assistant": "<string>"
}
'

{
  "success": true,
  "token": "<string>",
  "error": {}
}