{ 
  "p": "brc-420",
  "op": "deploy material",
  "id": "b70481ec63adac2b5690ba9efc369f73285fb76cffed61d931a945ad6dc73a2ci0",
  "name": "Y3_Head",
  "max": "200",
  "price": "0.01",
  "protocol": {"class": "RCP-SVG",
    "content_type": "image/svg+xml",
    "collection": {
        "name": "Y3_Head",
        "groups": ["g1", "g2"],
        "location": "Head",
        "type": "material",
        "belong_to": "f37eade36755893cc00e91cab282218b85e52a0a227ec3e8b045fbdc187c62adi0",
        "props": null
    }}
}