curl --request GET \
  --url https://api.example.com/api/billing-groups/{billingGroupId}/Contacts

[
  {
    "firstName": "<string>",
    "surname": "<string>",
    "fullName": "<string>",
    "siteID": 123,
    "siteName": "<string>",
    "address1": "<string>",
    "address2": "<string>",
    "address3": "<string>",
    "suburb": "<string>",
    "state": "<string>",
    "postcode": "<string>",
    "countryCode": "<string>",
    "countryName": "<string>",
    "phone": "<string>",
    "phone_Standardised": "<string>",
    "mobile": "<string>",
    "mobile_Standardised": "<string>",
    "clientID": 123,
    "clientName": "<string>",
    "email": "<string>",
    "email2": "<string>",
    "jobTitle": "<string>",
    "linkedInURL": "<string>",
    "description": "<string>",
    "photoName": "<string>",
    "photoUrl": "<string>",
    "id": 123,
    "openJobs": "<string>",
    "placements": "<string>",
    "contractors": "<string>",
    "createdByID": 123,
    "createdByName": "<string>",
    "updatedByID": 123,
    "updatedByName": "<string>",
    "linkedCandidateID": 123,
    "linkedCandidateName": "<string>",
    "divisions": "<string>",
    "createdDate": "2023-11-07T05:31:56Z",
    "updatedDate": "2023-11-07T05:31:56Z",
    "lastActivityDate": "2023-11-07T05:31:56Z",
    "nextActivityDate": "2023-11-07T05:31:56Z",
    "lastContactDate": "2023-11-07T05:31:56Z",
    "nextContactDate": "2023-11-07T05:31:56Z",
    "lastMeetingDate": "2023-11-07T05:31:56Z",
    "nextMeetingDate": "2023-11-07T05:31:56Z",
    "reportsToID": 123,
    "reportsToName": "<string>",
    "statusID": 123,
    "statusName": "<string>",
    "optOut": true,
    "deleted": true,
    "customField1": "<string>",
    "customField2": "<string>",
    "customField3": "<string>",
    "customField4": "<string>",
    "customField5": "<string>",
    "customField6": "<string>",
    "customField7": "<string>",
    "customField8": "<string>",
    "customField9": "<string>",
    "customField10": "<string>",
    "customField11": 123,
    "customField12": 123,
    "customField13": 123,
    "customField14": 123,
    "customField15": 123,
    "customField16": "2023-11-07T05:31:56Z",
    "customField17": "2023-11-07T05:31:56Z",
    "customField18": "2023-11-07T05:31:56Z",
    "customField19": "2023-11-07T05:31:56Z",
    "customField20": "2023-11-07T05:31:56Z",
    "customField21": "<string>",
    "customField22": "<string>",
    "customField23": "<string>",
    "customField24": "<string>",
    "customField25": "<string>",
    "customField26": "<string>",
    "customField27": "<string>",
    "customField28": "<string>",
    "customField29": "<string>",
    "customField30": "<string>",
    "customField31": "<string>",
    "customField32": "<string>",
    "customField33": "<string>",
    "customField34": "<string>",
    "customField35": "<string>",
    "customField36": "<string>",
    "customField37": "<string>",
    "customField38": "<string>",
    "customField39": "<string>",
    "customField40": "<string>",
    "customField41": 123,
    "customField42": 123,
    "customField43": 123,
    "customField44": 123,
    "customField45": 123,
    "customField46": 123,
    "customField47": 123,
    "customField48": 123,
    "customField49": 123,
    "customField50": 123,
    "customField51": "2023-11-07T05:31:56Z",
    "customField52": "2023-11-07T05:31:56Z",
    "customField53": "2023-11-07T05:31:56Z",
    "customField54": "2023-11-07T05:31:56Z",
    "customField55": "2023-11-07T05:31:56Z",
    "customField56": "2023-11-07T05:31:56Z",
    "customField57": "2023-11-07T05:31:56Z",
    "customField58": "2023-11-07T05:31:56Z",
    "customField59": "2023-11-07T05:31:56Z",
    "customField60": "2023-11-07T05:31:56Z",
    "tags": true,
    "location": "<string>",
    "statisticsCounts": [
      {
        "type": "<string>",
        "value": 123
      }
    ],
    "statisticsDates": [
      {
        "type": "<string>",
        "value": "2023-11-07T05:31:56Z"
      }
    ],
    "linkedInProfilePictureUrl": "<string>"
  }
]