curl --request POST \
--url https://api.neynar.com/v2/farcaster/channel/follow/ \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '{
"signer_uuid": "19d0c5fd-9b33-4a48-a0e2-bc7b0555baec",
"channel_id": "neynar"
}'