wp_ajax_nopriv_gdpr_set_consent

See hook in action

See this hook used in plugins:

Select Pluginjetpack.13.2jetpack.13.2.1jetpack.13.3.1jetpack.13.5jetpack.13.6jetpack.13.7jetpack.13.8jetpack.13.8.1jetpack.13.9.1jetpack.14.0