LN invoice created by Bitsaga app:
          Test invoice, amount: 21, invoice: lnbc210n1pnxjasnpp5vqje65m0f6rshcyj3cl7m2r5jy8nq0cv96tgmc870fyxhlukszlsdq523jhxapqd9h8vmmfvdjscqzzsxqyz5vqsp5kgkw2ymw0kyfxhztn0n76gsp69vnfssf2n8qw4ejlutdw0xpy39s9qxpqysgqca2xg7scx0skfefp5ymeylyk09tf8ueth2hvyv08hxcrcedqatt529syfxl8p0hgh9ql3l4guguj4jm3y7nfwm4arffzx093yy9pm5sqdmmecg