json_schema: {
      "_comment": "This Spec is for Phase 1!! Most updated version is at https://github.com/reTHINK-project/specs/tree/master/schemas",
      "properties": {
          "context": {
              "type": "string"
          },
          "dataSchemes": {
              "items": {
                  "enum": [
                      "comm",
                      "connection",
                      "context",
                      "identity"
                  ]
              },
              "type": "array"
          },
          "guid": {
              "type": "string"
          },
          "resources": {
              "items": {
                  "enum": [
                      "chat",
                      "audio",
                      "video",
                      "av",
                      "screen",
                      "file",
                      "midi",
                      "activity_context",
                      "availability_context",
                      "location_context",
                      "heart_rate_contexst",
                      "user_steps_context",
                      "battery_context",
                      "sleep_context",
                      "light_context",
                      "humidity_context",
                      "power",
                      "user_activity_context",
                      "user_communication_context"
                  ]
              },
              "type": "array"
          },
          "runtime": {
              "type": "string"
          },
          "url": {
              "type": "string"
          },
          "user": {
              "type": "string"
          }
      },
      "required": [
          "url",
          "user",
          "guid",
          "dataSchemes",
          "resources",
          "runtime",
          "context"
      ],
      "type": "object"
  }