WordPress JSON return unknown characters fo non English characters

for a project i create an endpoint something like wp-json/HSE/v1/reports which return json file everything is okey , also Engligh words , but for non English words i have real problem that its bring back something like \u0645\u0627\u0647\u0627\u0646 \u0633\u06cc\u0631\u062c\u0627\u0646 its confusing me at all .

i also check the wp-json/wp/v2/posts and watch the same problem .English words are fine but non English words are not readable .

what should i do to fix this ? anyone can help me please ?