Register a new user with their hashed PAN and public key. The hashed PAN is a unique identifier derived from the user’s Primary Account Number. The public key must be from a previously generated key pair.
Hashed PAN (Primary Account Number) used as unique identifier
"5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8"
Base64-encoded public key from generate-keys endpoint
"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A..."
Key ID from generate-keys endpoint
"550e8400-e29b-41d4-a716-446655440000"