/// <summary>
/// Preparing params for request
/// </summary>
/// <param name="public_key">Public API-key</param>
/// <param name="private_key">Private API-key</param>
public void Prepare(string public_key, string private_key)
{
Key = public_key;
Params = Params ?? new Dictionary <string, string>();
Params.Add("key", public_key);
Data = JsonConvert.SerializeObject(Params);
Signature = SHA512HMAC.Generate(Data, private_key);
}
