{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9213b6318904a0d6326c0388657946f6508995cebc6e8d83f23981556314697",
    "signature": "0x600cab933f455f5e602affe81575c3ecb1484511b117d7ba55abb51ac7ce1ecf631b0d3cd480b1a788b80984c170592a19aa60dd14aeaaeca9b8d7af4a3f896d1c",
    "signer": "0xcaA5393c9027232f2FC029484dec6bB3b1415A5b",
    "userId": "823717318"
  }
}