SETUP_EXTERNAL_USER_ACCESS_OAUTH2_MANAGE SETUP Endpoint
  /ondemand/setup/?method=SETUP_EXTERNAL_USER_ACCESS_OAUTH2_MANAGE  
  Set up external user access to a space, using OAuth2.  
  PARAMETERS TYPE NOTES
  user Numeric  
  contactperson Numeric  
  RETURN  
  code OAuth2 Code
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