Changes to Get one of the caller group's cash subscriptions

added the optional property error/authorization to the response with the 401 status

added the optional property error/authorization to the response with the 403 status

added the optional property error/authorization to the response with the 404 status

added the optional property error/authorization to the response with the default status

added the optional property wire_instructions/funding_account_last_four to the response with the 200 status

added the optional property wire_instructions/funding_bank_name to the response with the 200 status

added the optional property wire_instructions to the response with the 200 status

added the required property instructions_pending to the response with the 200 status

endpoint added