Thank you Michael for the step-by-step tutorial.
David Ammouial
2

To update state, as you know you have to send a signed transaction to the contract. Infura doesn’t manage keys, so to do so you will need to find a mechanism to sign the txn before sending to Infura. Once you have the raw signed transaction you can relay it to the Ethereum network via Infura. This is the method that MetaMask uses.

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