{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xe484e08a6023c5d179d7d079af37baa5192f57261cedb54d92389721cc7f6341",
    "signature": "0xab43cfb2b0a4213bb7a00ccce3600500408c7ee44953574cc5ba80d4c14bf9a3235a8d3578320d0bc8077b8589c5610cf0bb44c6fd9613760b51dbc9b46760601c",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}