curl --request POST \
  --url http://localhost:3001/api/v1/journeys/{journeyKey}/trigger \
  --header 'Content-Type: application/json' \
  --header 'idempotency-key: <idempotency-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "profile": {
    "email": "jsmith@example.com",
    "externalId": "<string>",
    "userId": "<string>",
    "anonymousId": "<string>",
    "properties": {}
  },
  "variables": {}
}
'

{
  "runId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}