curl --request PATCH \
  --url https://v1.api.flux-os.com/contracts/{id}/pricing-provisions/{pricing_provision_id}/condition-groups/{condition_group_id}/pricing-conditions/{pricing_condition_id} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-user-id: <api-key>' \
  --data '
{
  "measurement_property": "<unknown>",
  "measurement_unit": "<unknown>",
  "comparison_operator": "<unknown>",
  "value": 123
}
'

{
  "value": 123,
  "id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}