{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbf77b36ae7c51cb2812b1115b0a8de6f63cc55c09cab04c21944c6fccb0c9893",
    "signature": "0xc66e648c5b8e0af528b2463302e571db7e7e5e51bda9ad39898dbec1cf1859b07b695a7888deb9b32d79c2c09614514a17b5afabfeb399fed649a12bdb0d5ddd1c",
    "signer": "0x30c6478C8812030BfAF8A230bd71dC513d9b7be4",
    "userId": "581383209"
  }
}