curl --request POST \
  --url https://api.eka.care/abdm/nhpr/v1/hfr/link \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "clinic_id": "<string>",
  "hfr_id": "<string>"
}
'

{
  "data": {
    "clinic_id": "<string>",
    "hfr_id": "<string>"
  },
  "error": "<unknown>",
  "success": true
}