curl --request PATCH \
  --url https://v1.api.flux-os.com/contracts/{id}/pricing-provisions/{pricing_provision_id} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-user-id: <api-key>' \
  --data '
{
  "type": "<unknown>",
  "fee": "<unknown>",
  "description": null
}
'

{
  "id": "<string>",
  "description": null,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "groups": [
    {
      "id": "<string>",
      "parent_group": null,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "conditions": [
        {
          "value": 123,
          "id": "<string>",
          "created_at": "2023-11-07T05:31:56Z",
          "updated_at": "2023-11-07T05:31:56Z"
        }
      ]
    }
  ]
}