{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9ac1fe4b0b59ddca14d88beb78708067b7fe96074851c7dfea4d77720d1aa4d",
    "signature": "0xb21e9b58988aaa98bdec483812843cb50970f9610346290a9c39b9f42aaa1d2c34ee81d5c6e216e4f791fda76fcad25706bf3ea1ed24f03bb27871266a7b30621b",
    "signer": "0xd46e7780abC40f9fcdbAa8A6762854Bd6e0C5b14",
    "userId": "494569022"
  }
}