curl --request PATCH \
  --url http://localhost:3000/api/program-executions/{id}/pause \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "programId": "<string>",
  "organizationId": "<string>",
  "audienceId": "<string>",
  "flowId": "<string>",
  "status": "scheduled",
  "totalContacts": 123,
  "contactsCompleted": 123,
  "contactsFailed": 123,
  "contactsPending": 123,
  "contactsInProgress": 123,
  "scheduledStartAt": "<string>",
  "createdAt": "<string>",
  "updatedAt": "<string>",
  "scheduledStopAt": "<string>",
  "actualStartAt": "<string>",
  "actualEndAt": "<string>",
  "autoPauseRules": [
    {
      "nodeId": "node_abc123",
      "threshold": 100,
      "resetOnResume": true
    }
  ]
}