Catherine borrowed 100,000 roubles from the merchant Felten for agitation among the Guards
Political technologies, tried and tested over the centuries:.
..managed to stir up the guards' indignation against Peter Fyodorovich and to rouse sympathy for Catherine; and so that there should be no doubt as to the latter's kindness towards the guards, the conspirators warmed the mood of the guardsmen with treats offered in Catherine's name. She was all the while in communication with the ringleaders of the plot, kept abreast of what was going on in the guards' barracks, and even contrived to borrow 100 thousand roubles in secret from the English merchant Felten to cover the costs of the agitation..
And, as tradition demands, every coup in Russia runs on English money.