List all subaccounts IDs of an account address
Account address, the subaccounts owner
inj1cml96vmptgw99syqrrz8az79xer2pcgp0a885r
Pattern: ^inj1[0-9a-zA-Z]{38}$
{"subaccounts":["0x90f8bf6a479f320ead074411a4b0e7944ea8c9c1000000000000000000000000","0x90f8bf6a479f320ead074411a4b0e7944ea8c9c1000000000000000000000001","0x90f8bf6a479f320ead074411a4b0e7944ea8c9c1000000000000000000000002"]}