{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529321365",
    "entityType": "User",
    "nonce": "0x791a71498cde6e4eb15d64d6d6d857c3fff7fdad138d0986eda1e9489696a353",
    "signature": "0x51c3d6a598b0ca6fe1cabaedda449e633a9b25a69b5365e6d3cdf2b83cf48288351b4244f4243005964b881d6812134b5e44feb1badb54c45d70d8f4b1004ce71c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}