{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x795359313127a5d95904d7a7580b6a6a0166273ee073b47c71dd80dc2214a978",
    "signature": "0x62a6cad2ede8e6e7dd62b8414564ca2e278e68dc24cd19079060980c7d70ca68000bbc8e328c296ca273f8c8593ba525ae08060fa69d417918f614946a50090e1b",
    "signer": "0x4B03B9450DcE329d16f317309777a1ddDF894705",
    "userId": "74596186"
  }
}