{ "type":"object", "required":true, "properties":{ "command": { "type" : "string", "required" : true, "enum" : ["processing"] }, "instance" : { "type": "array", "required": false, "items" : {}, "minItems": 1 }, "tan" : { "type" : "integer" }, "mappingType": { "type" : "string", "enum" : ["multicolor_mean", "unicolor_mean", "multicolor_mean_squared", "dominant_color", "dominant_color_advanced"] } }, "additionalProperties": false }