JSFiddle - React, Tailwind, and code Playground
JavaScript
let userId = '5744bf326803fa55a47b23c6';
let obj = {
'первый': ['123','5744bf326803fa55a47b23c6', 123],
'второй': ['третий', 'четвертый']
}
for (key in obj) {
obj[key].forEach(function(item, i, arr) {
if (item === userId) {
alert('Logged');
}
});
}