{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18281",
    "entityType": "User",
    "nonce": "0x2d5e57a031737fedb915f9d7e426330b6825381327b46de52934419c98fc034c",
    "signature": "0x69b6f39ff35e387169386c704f1aae078e65dea6d3de337dd290c864727197364aebbe6084071b873c9922a9d7b3189f904cd1f87cb90232bf97dc72d43feb4c1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}