curl --request POST \
  --url https://api.example.com/v1/action/{action_id}/sendit \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "hash": {
    "types": "<string>",
    "steps": "<string>",
    "value": "<string>"
  },
  "data": {
    "amount": "<string>",
    "domain": "<string>",
    "expiry": "<string>",
    "random": "<string>",
    "source": "<string>",
    "symbol": "<string>",
    "target": "<string>"
  },
  "meta": {
    "signatures": [
      {
        "scheme": "<string>",
        "signer": "<string>",
        "public": "<string>",
        "string": "<string>"
      }
    ]
  }
}
'

{
  "error": {
    "code": 123,
    "message": "<string>",
    "details": {}
  }
}