{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbaa47a4ad97d5827f22deb09dd98a2675a4585547ac33dc524b819b1b763c37f",
    "signature": "0xc79962399dc1da491e5ba221e48829adc54c19ed49bd903b1dfead93c1675ffa321298b95cda6ee746ce17597473a4b69a8f92bfa44a59b5b23df0be1f7367d31b",
    "signer": "0xb75F9De06b8430b36F0304E8874D7A351019F9Ea",
    "userId": "634565976"
  }
}