On the X-Chain, one AVAX is 10^9 units.
On the P-Chain, one AVAX is 10^9 units.
On the C-Chain, one AVAX is 10^18 units.
“0x52B7D2DCC80CD2E4000000” is “100000000000000000000000000” (100,000,000 AVAX).
ref. https://www.rapidtables.com/convert/number/hex-to-decimal.html