Restructuring our JWT

Our JWT now needs to house the unique ID of the user, have encoding/decoding functions, and update the FromRequest trait implementation. The main definition of our JWT struct has the following outline:

// glue/src/token.rs
#[derive(Debug, Serialize, Deserialize)]
pub struct HeaderToken {
    pub unique_id: String
}
impl HeaderToken {
    pub fn get_key() -> Result<String, NanoServiceError> {
        . . .
    }
    pub fn encode(self) -> Result<String, NanoServiceError> {
        . . .
    }
    pub fn decode(token: &str) -> Result<Self, NanoServiceError> {
        . . .
    }
}

We will cover the code inside those encoding/decoding functions in the following subsections. Finally, we recall that the outline for the FromRequest trait implementation takes the form below:

// glue/src/token.rs
#[cfg(feature = "actix")]
impl FromRequest for HeaderToken {
    type Error = NanoServiceError;
    type Future = Ready<Result&lt...