Here it goes:
def jsonString = '''{
"Content" : {
"2024-02-26" : {
"2222" : [
{
"Field1" : 101985,
"Field2" : "TYRE",
"Field3" : "2024-02-26T08:30:00",
"Field4" : "08:30",
"Field5" : "26 Feb 2024",
"Field6" : 1,
"Field7" : 60,
"Field8" : 6380,
"Field9" : 127,
"Field10" : "Past",
"Field11" : false,
"Field12" : 0,
"Field13" : null,
"Field14" : 2961655,
"Field15" : null,
"Field16" : null,
"Field17" : null
}
]
}
}
}'''
def json = new groovy.json.JsonSlurper().parseText(jsonString)
assert json.Content.'2024-02-26'.'2222'[0].Field1 == 101985