{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306740",
    "entityType": "User",
    "nonce": "0x6077dd4078ed215405a2acf7dd19a9e658666741a58ff1a5b3a5b045d6550015",
    "signature": "0xc6f71d38e2b8e7fe5561133b5e9aaa32a778014eb69c3427dc419c5ce64300091684abf97eb825a6f2f8607ac0448e9bcd54393cf958809fb4259ce95c13fe461b",
    "signer": "0xf75adc45948144ee7d18bD5B4AEf863989CB88E6",
    "userId": "798360139"
  }
}