code

{
   "code":{
      "id":"ID",
      "url":"url",
      "label":"label",
      "description":"description"
   }
}

ShEx

PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX sio: <http://semanticscience.org/resource/>
PREFIX ejp-s: <http://purl.org/ejp-rd/vocabulary/>
PREFIX obo: <http://purl.obolibrary.org/obo/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX ejp: <http://purl.org/ejp-rd/vocabulary/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>


ejp-s:codeShape {
    ejp:id xsd:string  ;
    sio:SIO_000811 xsd:string ;
    rdfs:label xsd:string ;
    ejp:descritpiton xsd:string

}

Example turtle

@prefix :      <http://purl.org/ejp-rd/vocabulary/> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .
@prefix dcat:  <http://www.w3.org/ns/dcat#> .
@prefix dct:   <http://purl.org/dc/terms/> .
@prefix ejp:   <http://purl.org/ejp-rd/vocabulary/> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix ordo:  <http://www.orpha.net/ORDO/> .
@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xml: <http://www.w3.org/XML/1998/namespace> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .