Create Jira Issues with a custon field Select List (cascading)

[andrealansp]

I need help understanding how to create tickets using custom fields, I need to create a ticket with this custom field with this structure below:
"custom field_10060": {
"child": {
"id": "11520",
"self": "https://s.atlassian.net/rest/api/3/customFieldOption/11520",
"value": ""
},
"id": "10113",
"self": "https://.atlassian.net/rest/api/3/customFieldOption/10113",
"value": ""
}
How can i create a dict to use in method create_issue !

[andrealansp]

I found the solution !