{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1456727",
    "entityType": "User",
    "nonce": "0xb469fc637c5303d1f0d9b95cc930a986f560f697c5ec5005abb3697144781e43",
    "signature": "0x6a645cf97adf33b88fc5ba96375877c6eb02ac8c770a75d9af62f6ab7ebbbbb12080c50c9cc604bccb727a610b38f0c909831dce064c7f1fb312483b8f2f8dde1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}