Add a comment to an expiry

curl -X POST 'https://api.expiryedge.com/v1/createExpiryComment' \
  -H "Authorization: Bearer $EXPIRYEDGE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "expiryId": "exp_4Tq9sLm2",
  "text": "Renewal form submitted to the board."
}'

{
  "comment": {
    "id": "cmt_2Lx8",
    "expiryId": "exp_4Tq9sLm2",
    "text": "Renewal form submitted to the board.",
    "userId": "u_71bXq",
    "username": "Priya Shah",
    "edited": false,
    "timestamp": "2026-09-27T14:05:00.000Z"
  }
}