sign
Return the X-Auradefi-Signature value for body.
f"v1={hmac_sha256(secret, f'{timestamp_ms}.{body}')}": 67
characters: the v1= prefix plus 64 lowercase hex. Both the
secret and the signed string are encoded UTF-8.
Parameters
secretrequired, strnone
timestamp_msrequired, intnone
bodyrequired, strnone
Returns
str