'\u2063' + offerIdentifier + '\u2063' + appAccountToken + '\u2063' + nonce + '\u2063' + timestampʯ ʮappBundleId + '\u2063' + keyIdentifier + '\u2063' + productIdentifier + '\u2063' + offerIdentifier + '\u2063' + '' + '\u2063' + nonce + '\u2063' + timestampʯ StoreKit2 - ΦϑΝʔ ϓϩϞʔγϣϯΦϑΝʔΛߪೖ͢Δͱ͖ɺαʔόʔଆͰ signature Λੜͯ͠ɺ iOSଆͰ Product.purchase ࣌ʹ signature Λ༩͢Δඞཁ͕͋Δɻ ͜ͷͱ͖ɺΦϓγϣφϧͷ appAccountToken ͕ෆཁͳ߹ɺۭจࣈͱͯ͠ઃఆ͢Δɻ ※ۭจࣈແ͍ঢ়ଶͰ signature Λ࡞ͨ͠ΒߪೖͰ͖ͣΤϥʔʹͳΔɻ ϓϩϞʔγϣϯΦϑΝʔͷॺ໊࡞Ͱ·ͬͨ͜ͱʢsignatureʣ [Link] https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/subscriptions_and_offers/ generating_a_signature_for_promotional_offers