Below is the data structure of Custom Tags

_idStringUnique alphanumeric string id
nameStringName of this custom tag
optionsArrayArray of String options that are available for this custom tag
typeStringThe type of this custom tag. Can either be a custom user tag or a custom project tag.

Possible values: "user", "project"
isMultiBooleanWhether or not this custom tag allows multi select
createdAtDateDate created
createdByStringUser ID that created this custom tag
modifiedAtDateDate modified
modifiedByStringUser ID that modified this custom tag