{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "255240433",
    "entityType": "User",
    "nonce": "0x5750a0ca7bf0f29ab1e27f52aab7fe070a4054e407e403e8ce6d44bbad746f20",
    "signature": "0x011ca20ea182595f25ea7072dc3469d19b843c046dfb4d889e2fa45c9d902d375f6a4bfad59f25e4bb9ea1e795364cdf337fbd85f8078ca91d9e893401d93b041c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}