{
  "version": "1",
  "issuer": "https://issuer.review.proxypay.invalid/open-request/v1",
  "key_id": "test-ed25519-2026-08",
  "request_id": "cf9f5694-5807-449e-a55e-ea3f49a50209",
  "payment_reference": "6UtSff12c3XzQP9GP5jzzf4DFK6bujdjbjaFn5kF9Sms",
  "merchant_display_name": "Synthetic Green Market",
  "location_display_name": "Review Location 01",
  "recipient": "Vote111111111111111111111111111111111111111",
  "network": "devnet",
  "token_mint": "4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU",
  "amount_base_units": "12345678",
  "issued_at": "2026-08-13T18:00:00Z",
  "expires_at": "2026-08-13T18:05:00Z",
  "nonce": "6eqA4EsSnzBojIXsz_g9SCIStR2fmmy8Ehge2yoPaak",
  "display_reference": "PAY-4R7K2M",
  "signature": "TZ525yYSstfmIyY5tf15L_pLOUMeT86XZqXtzdMPFS_6_z_sbJkJaY8RhY8j_xqGpMsU3AHkx5aAhf_q9M1jCQ"
}