This section describes the transaction groups for each method of the protocol.
Where more than one transaction is required they must appear in an atomic group. The exact indices within the group are not important unless specified. However, the relative positions of transactions for each method are important. The transaction order may not change and no other transactions may appear between the transactions of each method.
Where user_address is specified the same address must be used for all instances within a method. any_address can be any value.