This field controls which verification service you are attempting to interact with.
Ex. We only have 1 /slverify endpoint but you have 3 different PII validation services, we need a way to know which service you're trying to verify attributes against. The apikey will dictate which service you'd like to verify the data against.
{
"credential": "[email protected]",
"apikey": "d5383282929294",
"userAttributes": [
...
]
}