Key	Type	Description
`callback_url`	string	Callback URL must be a valid URL (RFC-3986) using ASCII characters or IDNA Puny code. Bridge does not allow IP addresses, ports, or fragment identifiers.
`signature`	string	Signature of the object containing the above fields signed by originator VASP Private Key in VASP Key Pair.

Sample Object

{
  "callback_url":"https://originator/api/v1/originator/transaction/permission",
  "signature":"023836e2e4e431af20036c934289c6c35871cdfd21325f0adb5605d49cdfeeca077e925475a5e39692758780fcbed4d66a3b388aaaf6601d4145e12b5c39b092",
}