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MRCBBDCAW5ANM6NCEEZFZZHAC4T4BQQVL25VTSSPMVBRGYO6NWYQC
YLDLW26BHU33CBASODRBNFPRTUMCOGUFFI5CXGEIEL2EL3DFEPQQC
S4P2B3FPF57HPHTIAYGMPCVKB7573IB5ZBKNXVBTB6ICCPF55WNQC
escaped_user_id := urllib.path_escape(user_id)
_, _ := self.call(http.Method.put, 'profile/$username/displayname', name_data.str()) ?
_, _ := self.call(http.Method.put, 'profile/$escaped_user_id/displayname', name_data.str()) ?