def core__decode_token token
      begin
        body = JWT.decode(token, Rails.application.secrets.secret_key_base,
                          true, algorithm: 'HS256')[0]
        return HashWithIndifferentAccess.new body
      rescue => exception
        return nil
      end
    end
def core__decode_token token
      begin
        body = JWT.decode(token, Rails.application.secrets.secret_key_base,
                          true, algorithm: 'HS256')[0]
        return HashWithIndifferentAccess.new body
      rescue => exception
        return nil
      end
    end
This function return the payload of a token.