{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbee6df589664a2340f0ad18c2e416e9f5e39fa654f313102c1c9091d838ec5be",
    "signature": "0xe6b5b2e455be97649666c3c5f6f3b19cde722543fa8623e164fe1373f1d02fd841aaff7f423c2299ef57c5a21f1bf97bb0043dee962bacf8f3b59915612166e41b",
    "signer": "0x821Ba9D70911c7bCbef78c7Ef024d859557b341f",
    "userId": "589767899"
  }
}