curl --request GET \
  --url https://rest.staging.nickel.com/bill/{billId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "amountDueInCents": 123,
  "totalAmountInCents": 123,
  "vendorId": "<string>",
  "vendorName": "<string>",
  "dueDate": "<string>",
  "reference": "<string>",
  "status": "<string>",
  "documents": [
    "<string>"
  ]
}