json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "provider_key": {
              "type": "string"
          },
          "services": {
              "type": "array",
              "items": {
                  "type": "object",
                  "properties": {
                      "id": {
                          "type": "integer"
                      },
                      "backend_authentication_type": {
                          "type": "string",
                          "enum": [
                              "provider_key",
                              "service_token"
                          ]
                      },
                      "backend_authentication_value": {
                          "type": "string"
                      },
                      "backend_version": {
                          "type": "string",
                          "enum": [
                              "1",
                              "2",
                              "oauth"
                          ]
                      },
                      "backend": {
                          "type": "object",
                          "properties": {
                              "endpoint": {
                                  "type": "string"
                              },
                              "host": {
                                  "type": "string"
                              }
                          },
                          "required": [
                              "endpoint"
                          ]
                      },
                      "proxy": {
                          "type": "object",
                          "properties": {
                              "api_backend": {
                                  "type": "string"
                              },
                              "hosts": {
                                  "type": "array",
                                  "items": {
                                      "type": "string"
                                  }
                              },
                              "proxy_rules": {
                                  "type": "array",
                                  "items": {
                                      "type": "object",
                                      "properties": {
                                          "http_method": {
                                              "type": "string"
                                          },
                                          "pattern": {
                                              "type": "string"
                                          },
                                          "metric_system_name": {
                                              "type": "string"
                                          },
                                          "delta": {
                                              "type": "integer"
                                          }
                                      },
                                      "required": [
                                          "http_method",
                                          "pattern",
                                          "metric_system_name",
                                          "delta"
                                      ]
                                  }
                              }
                          },
                          "required": [
                              "api_backend",
                              "hosts",
                              "proxy_rules"
                          ]
                      }
                  },
                  "required": [
                      "id",
                      "backend_authentication_type",
                      "backend_authentication_value",
                      "backend_version",
                      "proxy"
                  ]
              }
          }
      },
      "required": [
          "services"
      ]
  }