{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb90f7f0c79394973a43e842c95a4b8d3eebadc02fc944c18cfbc7da145b6e035",
    "signature": "0xa263528c783a3081c5cc0d82c19728917d22e33096c8407e07fc4af01bd1ea2c69eaa1e65a3e4a877a43dc47a176d372b9adbef1cf38ace0deefea1db71534401b",
    "signer": "0xFD97dAa07E9170298134EB66b9b5b688fbb87dAa",
    "userId": "645381997"
  }
}