{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb257d776bf43a7dd06e4f1e5befc181c1e382d4435dcd94eba3c19cf40558571",
    "signature": "0x44c3678d9d1d37207a468f8fd751fb780b354c4e7c57158ed24df67526e42bbe18e23af5d3b206193c036128d21df9fd4349ac15385af32e252a178134a8aee11c",
    "signer": "0xBDb0354396Ba7e3fD95D48aFcB67d7B4679D7DCA",
    "userId": "801529327"
  }
}