{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451691735",
    "entityType": "User",
    "nonce": "0x9b8709a1134588b5335a5490f120016925fe42c303983e231f3f75192f4b0122",
    "signature": "0x5f2ae005ef208b2972d9fc9771d872d67aa2fde0c593929f795cd74ff01915dc78893acb06b07a92f64c2c6b847298a4b88f3e704d805955d3ede44471535fc51b",
    "signer": "0x344Cc6Cd6326A3Fc46e2f789e02111af483Df673",
    "userId": "980331"
  }
}