{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0xf49f642009756a3f994df36c2f87cedfef14935b1e816c9c85eb8102344f7f9b",
    "signature": "0x6a6410e14ae98714593c9bb7c26bf1d84280c55ede1d64de7977fe2a273a72012f4c9713dc4fd848c49e9c1daa5dea5f3ae1150cac1b091e1909eb0ee0f31f511c",
    "signer": "0xB5f484B2572C82B0a09b05912803Fd6151d3B78c",
    "userId": "205408122"
  }
}