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

{
  "created": "2023-11-07T05:31:56Z",
  "end_user_heron_id": "<string>",
  "funder": {
    "heron_id": "<string>",
    "name": "<string>"
  },
  "heron_id": "<string>",
  "submission_result": {},
  "submitted_at": "2023-11-07T05:31:56Z"
}