From Msgpack VI

Owning Palette: LabPack

Requires: LabPack

Converts MessagePack binary data to Variant. The Type and Defaults must be provided as schema-less decoding of MessagePack data is not supported. If a cluster is used, then all elements must have labels. Each element in a cluster is decoded as a map (key-value pair), where the element's label is the key. By default, the MessagePack binary type is converted to a byte array.

From Msgpack VI

cfxdtTypes and Defaults is the structure, or schema, of the MessagePack data. Schema-less decoding, i.e. arbitrary decoding, is currently not supported. The values are replaced with the values from the MessagePack data.
c1du8Msgpack Data is the binary data encoded according to the MessagePack specification.
cerrcodeclstError In describes error conditions that occur before this node runs. This input provides standard error in functionality.
cpathLabPack Shared Library is the absolute path to the LabPack shared library (DLL, dylib, or SO). If <Not a Path> is provided, then the LabPack LabVIEW library will search for the shared library in the current VI's directory, the source (src) folder of the project, and the system-specific library directory, such as /usr/lib on Unix-like systems. The first valid path to the shared library will be used.
cboolByte Array as Blobs configures the VI to handle byte arrays as binary blobs or as an array of U8 elements. If TRUE, then byte arrays (arrays with U8 elements) are treated and decoded as binary blobs instead of the array. This can be more efficient. Binary data is represented in LabVIEW as arrays of U8 elements. It is possible to also have array of U8 elements as a compound type in the MessagePack format. If FALSE, then byte arrays are decoded as MessagePack arrays instead of binary data.
ifxdtValue is the MessagePack data decoded according to the schema provided in the Types and Defaults. The values are replaced with the values from the MessagePack data. The Variant to Data VI can be used to obtain the values.
ierrcodeclstError Out contains error information. This output provides standard error out functionality.