Task: Create, update and get a user from Iterable

n8n workflow JSON:
{"id":"165","name":"Create, update and get a user from Iterable","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[310,340],"parameters":{},"typeVersion":1},{"name":"Iterable","type":"n8n-nodes-base.iterable","position":[510,340],"parameters":{"value":"","identifier":"email","additionalFields":{}},"credentials":{"iterableApi":"Iterable"},"typeVersion":1},{"name":"Iterable1","type":"n8n-nodes-base.iterable","position":[710,340],"parameters":{"value":"={{$node[\"Iterable\"].parameter[\"value\"]}}","identifier":"email","additionalFields":{"dataFieldsUi":{"dataFieldValues":[{"key":"Name","value":""}]}}},"credentials":{"iterableApi":"Iterable"},"typeVersion":1},{"name":"Iterable2","type":"n8n-nodes-base.iterable","position":[910,340],"parameters":{"email":"={{$node[\"Iterable\"].parameter[\"value\"]}}","operation":"get"},"credentials":{"iterableApi":"Iterable"},"typeVersion":1}],"active":false,"settings":{},"connections":{"Iterable":{"main":[[{"node":"Iterable1","type":"main","index":0}]]},"Iterable1":{"main":[[{"node":"Iterable2","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"Iterable","type":"main","index":0}]]}}}