13- create Subscriber - With MijnKPN Zakelijk User

Number of APIs: 6

1. 2- Get operations availability for chosen item GET {{baseUrl}}/hierarchy/children/:id/operations

2. 3- Get all roles GET {{baseUrl}}/hierarchy/subscribers/roles

3. 4- Get all grip entities not linked to subscriber - Rename it better GET {{baseUrl}}/hierarchy/grip-entities

4. 5- Get immediate children of given parent hierarchy entity GET {{baseUrl}}/hierarchy/children

5. 6- Create subscriber (with user) POST {{baseUrl}}/hierarchy/subscribers

6. 7- Get service requests details GET {{baseUrl}}/track-and-trace/service-requests/:id