gem install echochamber

require 'echochamber'

credentials = Echochamber::Credentials.new(app_id, app_secret, api_key, email, password)

client = Echochamber::Client.new(credentials)

url_file_params = {
      url:      'http://somedomain.com/contract.pdf',
      mimeType: 'application/pdf',
      name:     'contract.pdf'
}

file_info_params = {
     documentURL: Echochamber::UrlFileInfo.new(url_file_params) 
}

recipient_params = {
     role: 'SIGNER', email: '[email protected]'
}

agreement_info_params = {
     fileInfos:       [ Echochamber::Fileinfo.new(file_info_params) ],
     recipients:      [ Echochamber::Recipient.new(recipient_params)],
     signatureFlow:   "SENDER_SIGNS_LAST",
     signatureType:   "ESIGN",
     name:            "Rumplestiltskin Contract"
}

agreement = Echochamber::Agreement.new(sender_id, sender_email, agreement_info) 

agreement_id = client.create_agreement(agreement)

result = client.cancel_agreement(agreement_id, true, 'Because...blah blah.')

user_params = {
      firstName:  'JohnQ',
      lastName:   'Public',
      email:      '[email protected]',
      password:   'kN12oK9p!3',
      title:      'Hedge Wizard'
}

user = Echochamber::User.new(user_params)

user_id = client.create_user(user)

tran_doc_id = client.create_transient_document(file_name, mime_type, File.new('myfile.pdf'))