Does a manufacturer under the composition scheme need to maintain details of accounts of every supply received and made

No, the requirement to maintain detailed accounts of stocks in respect of goods received and supplied, work in progress, lost, destroyed etc. does not apply to a manufacturer under the composition scheme.
Such a person shall maintain a true and correct account of production or manufacture of goods, inward and outward supply of goods, stock of goods, tax payable and paid.

(FAQ 52: MSME)

What are the accounts a manufacturer under the composition scheme needs to maintain

Rules on Accounts and Records provide details of the accounts to be maintained. They are maintained under normal course of business by any small manufacturer. The details to be maintained in accounts inter-alia consists of goods supplied, inward supplies attracting reverse charge, invoices, bills of supply, delivery challans, credit notes, debit notes, receipt vouchers, payment vouchers, refund vouchers etc.

(FAQ 51: MSME)

How can tax payments be made by a registered person under the composition scheme

A registered person under composition scheme would not have input tax credit and he would make all his tax payments by debit in the electronic cash ledger maintained at the common portal. The taxpayer can deposit cash anytime in the electronic cash ledger at his convenience. The payment in electronic cash ledger can be made through all modes available like e-payment through net-banking, credit card and debit card, over the counter of banks, RTGS or NEFT.

(FAQ 49: MSME)

Can a person paying tax under composition levy, withdraw voluntarily from the scheme

Yes, the registered person who intends to withdraw from the composition scheme can file a duly signed or verified application in FORM GST CMP-04. In case he wants to claim input tax credit on the stock of inputs and inputs contained in semi-finished or finished goods held in stock by him on the date of withdrawal, he is required to furnish a statement in FORM GST ITC-01 containing the details of such stock within a period of thirty days of withdrawal.

(FAQ 45: MSME)

What are the other compliances which a provisionally registered person opting to pay tax under the composition levy need to make

Such person is required to furnish the details of stock, including the inward supply of goods received from unregistered persons, held by him on the 30th day of June, 2017 electronically, in FORM GST CMP-03, on the common portal,
either directly or through a Facilitation Centre notified by the Commissioner, within a period of sixty days from the date on which the option for composition levy is exercised or within such further period as may be extended by the Commissioner in this behalf. Further, if on 1st July, 2017 such person holds in stock goods that have been received from outside the State or imported from outside the Country, he is not eligible to opt for composition scheme.

(FAQ 44: MSME)