{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171877",
    "entityType": "User",
    "nonce": "0x87f555732dc0ed64fdd471cf83bc9fd764ab28511286a5a8edcd4d03ddda4aa1",
    "signature": "0x6fff4995a07282b40aeefb9311619dff5c305d7cc9ada12e6241218ba782a48a70f556f4e3bd91512cbcd98a6fd024bf352536ad6c2ccb91282651144c6db4c61b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}