curl --request POST \
  --url https://grid.squads.xyz/api/grid/v1/passkeys/find \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-grid-environment: <x-grid-environment>' \
  --data '{
  "authenticatorResponse": {},
  "sessionKey": {}
}'

{
  "passkey_account": "<string>",
  "session_key": {}
}