{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0x46d816f9c548ab4b4e1f908cab2413d4725dcbdd64d6def3ea9084f484e645e0",
    "signature": "0xe4b5977c7974f0c48b287eecffec7d676d84c64b7853d9ccf2ccb5afdc01f3b35ab123c45a07914e6d057783a47096ae4bb17fadfa64b2d937284b834b46abb61c",
    "signer": "0xcf853a25d9894A86C19c2a5A99FC3E20017c012A",
    "userId": "561301698"
  }
}