rest api integration

[vlad88vlad]

I have an object, it has field "contacts", which contains the "people" belonging to some "groups".
"contactsIds": ["58aaadea001da74c0"
],
"contactsNames": {58aaadea001da74c0": "маг Леся "
},

"contactsColumns":
{"58aaadea001da74c0":
{
"role": ""
}

},

How to get an object from API with "contacts" containing "people" belonging to some "groups".
"teamsIds": [
"58061939616fe1b5e"
],

"teamsNames":
{"58061939616fe1b5e": "Офіс-менеджер"
}