{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xd1befda826317272f7a328e77a36cf7fd68ae304338d4b9bdb3723c31b1e8b77",
    "signature": "0x530ddec35a34b3313f2d702d16e10b3bba78ea5fea3b4a163862a962680ab97b72c4014ea708b3666f99ea5409f37c7aa4cac0fff88e579057b14b8dbe48066f1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}