Macro compose_extrinsic_with_nonce 

macro_rules! compose_extrinsic_with_nonce {
    ($api: expr,
	$nonce: expr,
	$pallet_name: expr,
	$call_name: expr
	$(, $args: expr) *) => { ... };
}

Generates an UncheckedExtrinsic for the given pallet and call, if they are found within the metadata. Otherwise None is returned.

Arguments

• ‘api’ - This instance of API. If the signer field is not set, an unsigned extrinsic will be generated.
• ‘nonce’ - signer’s account nonce: Index
• ‘pallet_name’ - Pallet name as &str for which the call is composed.
• ‘call_name’ - Call name as &str
• ‘args’ - Optional sequence of arguments of the call. They are not checked against the metadata.