{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "657",
    "entityType": "User",
    "nonce": "0x9cff38e86acfc188b3a89c8d09628035f7faa450db7a80b132fc1e2ae088e651",
    "signature": "0xe6691486131fb5aae74bfc0d79b987bf2bb4459f56e537f4d99af423eb934da317e69b35a57860f35469e1bd2a240930ed9c712c136827cdc771ea8bf7e7b3ab1b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}