While you can use
alchemy_requestPaymasterAndDatato request a paymaster signature, it's important to note that this function requires gas fields to be part of the
UserOperation. These gas fields are influenced by the
paymasterAndDatacontent (size and validation gas), creating a circular dependency.
To simplify this process, we recommend using
alchemy_requestGasAndPaymasterAndData. This function not only provides a gas estimation, but also returns a signed
paymasterAndDatacontaining that gas estimation, therefore resolving the circular dependency.