Message malformed: extra keys not allowed @ data['automation'] - error

Trying to setup automation based on github documentation

Set temperature to 24 in heat mode

device_id: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
domain: climate
automation:
actions:
action: climate.set_temperature
target:
entity_id: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
data:
temperature: 24
hvac_mode: heat
alias: Set main floor to 78

Error: Message malformed: extra keys not allowed @ data[‘automation’]

Its the yaml from the documentation. Can someone help

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