action
The type of handshake:
INVITE: Handshake sent to a standalone account requesting that it to join the sender's organization.
ENABLE_ALL_FEATURES: Handshake sent to invited member accounts to enable all features for the organization.
APPROVE_ALL_FEATURES: Handshake sent to the management account when all invited member accounts have approved to enable all features.
TRANSFER_RESPONSIBILITY: Handshake sent to another organization's management account requesting that it designate the sender with the specified responsibilities for recipient's organization.