{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1722125",
    "entityType": "User",
    "nonce": "0x3ca6667fa089eddf53949a79b9863dd043d6d3cb43a417ccbedc207453ede67a",
    "signature": "0xa5b52f8f427c4028e2392d17e35debccb11161dea45249b4830c6c9d9bbbaae53f1a4116086aa3312f24594986925ea63be64b325e415db92fe31fca533e61821b",
    "signer": "0x8b77d47DA28d313A2824468913d2f44F9a5B7b75",
    "userId": "808833626"
  }
}