Registers a session key for an embedded wallet

curl --request POST \
  --url https://app.dynamicauth.com/api/v0/sdk/{environmentId}/users/embeddedWallets/sessionKey \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "publicKey": "An example name",
  "prevSessionKeySignature": "An example name"
}'

{
  "publicKey": "<string>",
  "expiresAt": 123
}