curl --request POST \
  --url https://public-api-v2.bags.fm/api/v1/agent/auth/init \
  --header 'Content-Type: application/json' \
  --data '
{
  "agentUsername": "<string>"
}
'

{
  "success": true,
  "response": {
    "publicIdentifier": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "secret": "<string>",
    "agentUsername": "<string>",
    "agentUserId": "<string>",
    "verificationPostContent": "<string>"
  }
}