这个是什么编码
GRA9Gg4HGj07NAInCRcMIAk6Bj4IChEqHi0PHwoABQcLChIRARcPHwoQBQcLMBIRHhcPHxY6BQcIIBFmAhEXbAo5NHYWDSNgGRAQIA4HGQATDQ0qNxwTKg4HGj0TDQoRGRAQICUbAXQ6EQk/HnQcNQk4CigUMh47MHYILCdgFXI4HgImHykXLyYABj0LNQoWC3cDKR4UBTITDQ4UBxEfEBcpFnYXIwlgHRA+bQkHODE7DQpiHAcMIAk6Bj0IIBEqHikLaiE6Bj0UMBEpAhcMIAk+O3Q9EQU/HnQcNQk4CigUMh46ChM1MiAAZi47a3Q/Hi8ANQk5GigXaRVu
有点像是AES加密后的字符串