def create_agreement(agreement)
     agreement_response = Echochamber::Request.create_agreement(agreement, token, agreement.user_id, agreement.user_email)
     agreement_response.fetch("agreementId")
   end
def create_agreement(agreement)
     agreement_response = Echochamber::Request.create_agreement(agreement, token, agreement.user_id, agreement.user_email)
     agreement_response.fetch("agreementId")
   end
Creates an agreement

 @param agreement [Echochamber::Agreement]
 @return [String] Agreement ID