fix cb in subscribe and unsubcribe function
fix cb in subscribe and unsubcribe function

fr34k8/copay,urv2/wallet,JDonadio/copay,cobit-wallet/cobit,Bitcoin-com/Wallet,Bitcoin-com/Wallet,bitjson/copay,cmgustavo/copay,cobit-wallet/cobit,bitjson/copay,Groestlcoin/GroestlPay,tanojaja/copay,JDonadio/copay,Groestlcoin/GroestlPay,msalcala11/copay,Bitcoin-com/Wallet,gabrielbazan7/copay,mpolci/copay,troggy/unicoisa,fr34k8/copay,ajp8164/copay,Groestlcoin/GroestlPay,msalcala11/copay,tanojaja/copay,ObsidianCryptoVault/copay,dabura667/copay,ObsidianCryptoVault/copay,matiu/copay,ajp8164/copay,hideoussquid/aur-copay,troggy/colu-copay-wallet,ObsidianCryptoVault/copay,hideoussquid/aur-copay,tanojaja/copay,matiu/copay,ajp8164/copay,dabura667/copay,javierbitpay/copay,bitjson/copay,troggy/unicoisa,mpolci/copay,msalcala11/copay,Kirvx/copay,mpolci/copay,Bitcoin-com/Wallet,urv2/wallet,javierbitpay/copay,urv2/wallet,troggy/colu-copay-wallet,cmgustavo/copay,matiu/copay,Kirvx/copay,javierbitpay/copay,ObsidianCryptoVault/copay,gabrielbazan7/copay,Groestlcoin/GroestlPay,hideoussquid/aur-copay,cmgustavo/copay,janko33bd/copay,gabrielbazan7/copay,bitjson/copay,JDonadio/copay,janko33bd/copay,troggy/unicoisa,javierbitpay/copay,urv2/wallet,troggy/colu-copay-wallet,cobit-wallet/cobit,bitchk-wallet/copay,fr34k8/copay,bitchk-wallet/copay,hideoussquid/aur-copay,gabrielbazan7/copay,bitchk-wallet/copay,matiu/copay,msalcala11/copay,troggy/unicoisa,troggy/colu-copay-wallet,fr34k8/copay,janko33bd/copay,cmgustavo/copay,tanojaja/copay,dabura667/copay,mpolci/copay,JDonadio/copay,Kirvx/copay,Kirvx/copay