How to search data inside the child nodes of an element.?

Below is my json document on the elastic. i want to use the search query to get data from my elastic
i have 7807943136776cff960b69dcd5eabce5b16fb1c9 and 106287f82a96eaf35ecc120ab989eb0607b32f19 as input

_source":{
"issue_id":"121270",
"issue_type":"Story",
"commitId":{
"persistence-composite-service":{
"2016-8-23":[
"7807943136776cff960b69dcd5eabce5b16fb1c9",
"37522f27f762e4e98dd309de7f5a9308d8619c8d"
],
"2016-8-19":[
"106287f82a96eaf35ecc120ab989eb0607b32f19"
]
}
}
}