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)