curl --location --request GET 'https://api.datagardener.com/companies/12559329/group-structures' \
--header 'x-api-key;'
{
"ultimateParentCompanyRegistrationNumber": "string",
"parentCompanyRegistrationNumber": "string",
"companyRegistrationNumber": "string",
"businessName": "string",
"country": "string",
"companyLevelGroup": "string",
"holdingType": "string",
"ultimateParentBusinessName": "string",
"parentBusinessName": "string"
}