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event: run_started
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id: 2
event: text_delta
data: {"delta":"I","type":"text_delta"}

id: 3
event: text_delta
data: {"delta":" received:","type":"text_delta"}

id: 4
event: text_delta
data: {"delta":" hello","type":"text_delta"}

id: 5
event: text_delta
data: {"delta":" fixture","type":"text_delta"}

id: 6
event: run_completed
data: {"message_id":"019eafbf-36ed-7462-8d3a-5493f5cfb1cb","type":"run_completed"}