curl --request POST \
  --url https://app.herondata.io/api/broker_funder_policies/funders/ \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "funder_heron_id": "<string>"
}
'

{
  "broker_user_id": 123,
  "created": "2023-11-07T05:31:56Z",
  "external_reference_id": 123,
  "funder_heron_id": "<string>",
  "last_updated": "2023-11-07T05:31:56Z",
  "offer_calculation_constants_override": {},
  "offer_email_instructions_override": "<string>",
  "offer_portal_instructions_override": "<string>",
  "offer_source_override": "email",
  "staging_submission_integration_id": 123,
  "submission_cc_email_addresses": [
    "<string>"
  ],
  "submission_channel_override": "email",
  "submission_email_address": "<string>",
  "submission_integration_id": 123
}