{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0xdc969b220ed0435745c5f7aafdddfe5acbe30d5ddc2af4423f8f3054f227d992",
    "signature": "0xbeac2b506ab4fd117bb88f3eb67b4bf37620bfb719854eaa832be92c2fb12fc01dacd17d7ea71f05e4fcdf3fa822069252014b9a54163c7b978ed04ab7ca43e21c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}