Task: Create, update and get a case in TheHive

n8n workflow JSON:
{"id":"159","name":"Create, update and get a case in TheHive","nodes":[{"name":"On clicking 'execute'","type":"n8n-nodes-base.manualTrigger","position":[270,340],"parameters":{},"typeVersion":1},{"name":"TheHive","type":"n8n-nodes-base.theHive","position":[470,340],"parameters":{"tags":"n8n, theHive","owner":"Harshil","title":"n8n","options":{},"resource":"case","severity":1,"operation":"create","startDate":"2020-12-03T10:08:14.000Z","description":"Creating a case from n8n"},"credentials":{"theHiveApi":"hive"},"typeVersion":1},{"name":"TheHive1","type":"n8n-nodes-base.theHive","position":[670,340],"parameters":{"id":"={{$node[\"TheHive\"].json[\"id\"]}}","resource":"case","operation":"update","updateFields":{"severity":3}},"credentials":{"theHiveApi":"hive"},"typeVersion":1},{"name":"TheHive2","type":"n8n-nodes-base.theHive","position":[870,340],"parameters":{"id":"={{$node[\"TheHive\"].json[\"id\"]}}","resource":"case","operation":"get"},"credentials":{"theHiveApi":"hive"},"typeVersion":1}],"active":false,"settings":{},"connections":{"TheHive":{"main":[[{"node":"TheHive1","type":"main","index":0}]]},"TheHive1":{"main":[[{"node":"TheHive2","type":"main","index":0}]]},"On clicking 'execute'":{"main":[[{"node":"TheHive","type":"main","index":0}]]}}}