@ApiResponses(
cron expressions can be submitted in either string or json format.

cron string format example:

"cron": "0 /1 * *",
...
 

cron json format example:

"cron": {
"minutes": "0",
"hours":"/1",
"dayofmonth": "",
"month": "",
"dayofweek": ""
},
...

Useful links:

• https://en.wikipedia.org/wiki/Cron#CRON_expression,
• https://crontab.guru/