{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721084704",
    "entityType": "User",
    "nonce": "0xb0bf51c3c83e88be5f96ec0a9c4ba631ece833e450154f5d5f5b71ed24a14ad9",
    "signature": "0xc7352cdacc9f6dbcb8222a9371eda0b2cbddabecc094f84e63f25eec601be08e3b244d7178105a85dceb2a47e979841df7b7a67011a67952c9aae1d89bcca8ea1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}