Get a specific POI.

This endpoint returns the complete information of a POI by its OID. The user must have read access to the requested POI.
The structure of a POI is the following:

• oid: the unique identifier (OID) of the POI.
• name: the human-friendly name given when creating the POI
• public: a Boolean indicating whether the POI is marked as public. That means the POI will be accessible by other accounts as well in the /pois/public endpoint.
• visible: a Boolean flag with no effect in the system. Usually to be used in front-ends.
• company_oid: the unique identifier (OID) of the company_id associated with the POI.
• info: JSON field containing metadata.
• tags: list of tags for the POI.
• geometry: GeoJSON object with the geometry shape of the POI.
• created_at: timestamp of the POI creation.