{"type":"rich","version":"1.0","author_name":"colombo (npub10a…lp3hz)","author_url":"https://nostr.ae/npub10a0jcznt2tjwm8v74tc3322fy5whjk7kcmr7zmezwz587dthm8tqelp3hz","provider_name":"njump","provider_url":"https://nostr.ae","html":"Explain what is necessary for a multisig backup"}