Modify user balances in test paywalls

fetch('https://onlineapp.pro/api/v1/test/withdraw-balances', {
    method: 'POST',
    body: JSON.stringify({
				paywall_id: 100, // past here your paywall id from personal cabinet
				user_id: '320f173b-d831-4c90-8746-fd22aa8fe673', // paste here the user ID from paywall.getUser() for the user whose balance you want to change 
				tokens: 10000 // optional parameter that sets balances to a specified value. If not provided, balances will be set to zero.
    }),
})