{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xc9f38e1dc3d1e7aab5c2b77e70909b07400329575350fe164471c0f5a845454e",
    "signature": "0xcd2173026e0b29a673321ff663d631af4899f59d830302275b5f0a56bec812052b8a878dbc3c696b5038454d7c83b6d9280648e7d292ac7907712c61dcfb07251b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}