curl --location --request PUT '/smartflows//actions/audience/meta/' \
--header 'Authorization: Bearer JWT' \
--header 'Content-Type: application/json' \
--data '{
"name": "Custom activity name",
"account": "fsf54s6ffddf",
"newMetaAudienceTitle": "My new audience",
"metaAudience": "dsflsdjf3454654e64",
"updateAudience": {
"type": "once",
"source": "123"
}
}'{
"error": "Reason of failure"
}