Access token
POST https://bitbucket.org/site/oauth2/access_token
Request Body
[{"name"=>"grant_type", "value"=>"client_credentials", "datatype"=>"string"}]
POST https://bitbucket.org/site/oauth2/access_token
[{"name"=>"grant_type", "value"=>"client_credentials", "datatype"=>"string"}]