{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377610060",
    "entityType": "User",
    "nonce": "0xdb6a46a644ffbfebe0983063a4ca716154edcddd8ea39501b855e5fbf257cbd1",
    "signature": "0x151daeb2016c8392c78cb0243bbbb8c69e509abecafbc580b71c22ad4eedca7d0d0923b407b8c29a565e9f9de35bc10d39b69f6bd8482b39f67dd2cf759a1e961b",
    "signer": "0x344Cc6Cd6326A3Fc46e2f789e02111af483Df673",
    "userId": "980331"
  }
}