{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43309",
    "entityType": "User",
    "nonce": "0xe33d36e59801b60928e20b7cc26ce0fb15e58fabf958895e22ebdd527ce94f6b",
    "signature": "0xcad566730516d1f9a4c7794770a093df14785d8b7f9c4e2be201dc3e6629f63f2552ce30959e0b9f9b52bf4229a8bfde27672519a1acb4a804af5f0d5f0a51ba1b",
    "signer": "0x764341232AB28643e8106bCF183A4cCc2fFfa6c3",
    "userId": "67250118"
  }
}