[0: 64 Bit Integer] test:
|–Header: 7 bytes
|–Payload: 8 bytes
|–Total: 15 bytes
'–Value: 9223372036854775807

[15: 32 Bit Integer] int32:
|–Header: 8 bytes
|–Payload: 4 bytes
|–Total: 12 bytes
'–Value: 1866009202

