
Empty:
ref=$(curl -s -X POST "127.0.0.1:5556/v1/order1" -H "accept: */*" -H "Content-Type: application/json" -d "{\"beneficiaryIDDocumentCID\":\"\",\"extension\":{\"coin\":\"0\"}}");sleep 4; curl -X POST "127.0.0.1:5556/v1/order/secret1" -H "accept: */*" -H "Content-Type: application/json" -d "{\"orderReference\":$ref,\"beneficiaryIDDocumentCID\":\"QmcyJqEMqNEEYHrNSyUY83CQCNwZ5yVan3SgaQ4NchsqsC\"}"


Define at start:
ref=$(curl -s -X POST "127.0.0.1:5556/v1/order1" -H "accept: */*" -H "Content-Type: application/json" -d "{\"beneficiaryIDDocumentCID\":\"QmcyJqEMqNEEYHrNSyUY83CQCNwZ5yVan3SgaQ4NchsqsC\",\"extension\":{\"coin\":\"0\"}}");sleep 4; curl -X POST "127.0.0.1:5556/v1/order/secret1" -H "accept: */*" -H "Content-Type: application/json" -d "{\"orderReference\":$ref,\"beneficiaryIDDocumentCID\":\"\"}"