Signing request confusion

[nemishzalavadiya-pirimid]

here Signing Beckn APIs in HTTP

At 4th step, please confirm

Concatenate the three values, i.e the created, expires and digest in the format as shown below. The below string is the signing string which the BAP is going to use to sign the request

Request data format is this,

(created): 1641287875
(expires): 1641291475
digest: BLAKE-512=b6lf6lRgOweajukcvcLsagQ2T60+85kRh/Rd2bdS+TG/5ALebOEgDJfyCrre/1+BMu5nA94o4DT3pTFXuUg7sw==

or this,

(created): 1641287875
(expires): 1641291475
digest:
BLAKE-512=b6lf6lRgOweajukcvcLsagQ2T60+85kRh/Rd2bdS+TG/5ALebOEgDJfyCrre/1+BMu5nA94o4DT3pTFXuUg7sw==
?

Also Please confirm Concatenate the three values is default concat with newline character \n?

[92shreyansh]

signString = "(created): " + currentTime + "\n(expires): " + (currentTime + VALIDITY)+ "\ndigest: BLAKE-512=" + blakeHash + "";