I have it figured out now, it's working with /dvr/entry/create but right now I want to figure out /dvr/timerec/create, I tried
{"enabled":true,"name":"Simplykpop","title":"%F_%R_simplykpop","channel":"d9b927a76f3e913d10462c30282c3df0","start":"11:50","stop":"13:50","weekdays":[5],"pri":2,"retention":0,"removal":0,"config_name":"ccb9dce496903e2179c04b321cede6c2","creator":"127.0.0.1"}
But it gave out 400 Bad Request, am I not entering anything right here?