post https://example.com/api/v1/client/workflow//reassign
To reassign a workflow item it must be currently directly assigned to you.
'comment', optional. Comment for the assignment to the next user.
'assignToGuid', optional. The user GUID to assign the next state to.
'assignToName', optional. The user name to assign the next state to. If both 'assignToGuid' and 'assignToName' are supplied the GUID is used. At least one of these properties must be supplied.