{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x3432b75915453955e64ff7ac6dcaf05514f02bf4b5a38a69c0d06981298e7133",
    "signature": "0xe318ac78c4ecf094f72ef7d8aeb0440d16d4b9b3494c44269d462584081281717c24ce5b9e06ea1c40eaeb9ac0c8802ecf0a8e2d6ba43bba3c33f1f2206e093c1c",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}