{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8604b96773e5f2cedb03dc5310d6f5ea7c3890ca64de799447fb199ed155ecdc",
    "signature": "0x1a3de1eb2ac47800c1f283af96676a94290c983e6781be53a3b05923b20a30e33cc98925fee6a7edff8323db164de43a72accb300259a796ca642bed2e1d2ff21b",
    "signer": "0x8370Ff952F08E2A925A76D493aE4514A7ef04722",
    "userId": "325668551"
  }
}