{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0x11b558c4a2445aa09ac6b3479923594af31b581a80b7e66f30fbbe9b56aee933",
    "signature": "0x745bfe6db956092727a70d895ee7984d0c4980da4c2f0862051961af35a0543c5139946b31479e699921665a88a179724827e54ef03b2d6e844ad730631842761b",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}