Fetch a single account by externalId.
GET /external-api/accounts/:externalId
/external-api/accounts
Authorization: Bearer <org_api_key>
curl -sS \ -X GET "https://api.corafone.com/external-api/accounts/FILE_123" \ -H "Authorization: Bearer cora_org_<keyId>.<secret>"
{ "success": true, "code": "ACCOUNT_FETCHED", "message": "Account fetched successfully", "account": { "id": "ACCOUNT_ID", "externalId": "FILE_123", "organizationId": "ORG_ID" } }