RENDER_SIGNATURE_HEADER
constRENDER_SIGNATURE_HEADER:"X-Ebitex-Signature"='X-Ebitex-Signature'
The header carrying v1,t=<unix seconds>,s=<hex hmac>.
constRENDER_SIGNATURE_HEADER:"X-Ebitex-Signature"='X-Ebitex-Signature'
The header carrying v1,t=<unix seconds>,s=<hex hmac>.