{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0d0ef742b205fcf57a88abdc17a14c638aceef95252dfa32497ef61684c6183",
    "signature": "0xa1168bfc59c986de2588d0c75acfeea59c28caf23f4b0dbbf5f2ea1b3fe6d8da1f13c331c8e177c2eb221f0d8cc54988b4406b159cb60948b88dcc0abd47677d1c",
    "signer": "0x9C8229cd7f3FDC7d9ec59D7322b3f779938Da60D",
    "userId": "542837433"
  }
}