INFO add logs to validate each steps

[Baptiste-Yucca]

On PROD, there is no log,
That is impossible to see where code is broke.

As an example :

{
"success": true,
"data": {
"addresses": [
"0xXXXX"
],
"results": [
{
"address": "0xXXXX",
"success": false,
"error": "Cannot convert 5.753361368183663e+21 to a BigInt"
}
],
"summary": {
"totalAddresses": 1,
"successful": 0,
"failed": 1,
"stablecoins": [
"USDC",
"WXDAI"
]
}
}
}