curl --request PUT \
  --url https://b2b-api.dev-riseworks.io/v2/payments/external_entity/instant \
  --header 'Content-Type: application/json' \
  --data '
{
  "from": "<string>",
  "amount_cents": 5000000050,
  "signer": "<string>",
  "typed_data": {
    "from": "<string>",
    "to": "<string>",
    "salt": "<string>",
    "expires": "<string>",
    "data": {
      "id": "<string>",
      "groupID": "<string>",
      "payAtTime": "<string>",
      "validMinutes": "<string>",
      "payType": "<string>",
      "token": "<string>",
      "recipient": "<string>",
      "amount": "<string>",
      "data": "<string>"
    }
  },
  "signature": "<string>",
  "external_recipient_email": "<string>",
  "currency_symbol": "USD",
  "network": "arbitrum"
}
'

{
  "success": true,
  "data": {
    "transaction": "<string>"
  }
}