curl --request POST \
  --url https://api.halth.com/v1/organisations/{organisationId}/clients \
  --header 'Content-Type: application/json' \
  --data '
{
  "firstName": "John",
  "lastName": "Doe",
  "mobileNumber": "+27712345678",
  "email": "john.doe@example.com",
  "dateOfBirth": "1990-01-01"
}
'

{
  "id": "<string>",
  "deleted": true,
  "createdAt": "2023-11-07T05:31:56Z",
  "memberId": "memb_38JiySr0Z0ePjHpqvosimyLQuUC",
  "firstName": "<string>",
  "lastName": "<string>",
  "dateOfBirth": "<string>",
  "mobileNumber": "<string>",
  "email": "<string>",
  "source": "pms",
  "pmsPatientId": "<string>",
  "pmsCreatedAt": "2023-11-07T05:31:56Z",
  "profileImageUrl": "<string>"
}