{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0xb309ad39a68997477694889bf2b423591a6d4afaf9a8e2aeff933612c6dcaf56",
    "signature": "0xcd61691d25c9a36928b0f1653d9db69f6e31f2adb257d4cdedd7b623db16a13136cc7761c2d56b733a2abc0e6bef51af9aea94c23fc7ea135884c9cb5d8b81051c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}