Authorization: ********************curl --location --request GET '/v1/clients' \
--header 'Authorization: <api-key>'[
{
"clientId": "string",
"groupAccountId": "string",
"username": "string",
"email": "string",
"phoneNumber": "string",
"firstName": "string",
"lastName": "string",
"dateCreated": "2019-08-24T14:15:22Z",
"createdByUserId": "string"
}
]