{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1887966",
    "entityType": "User",
    "nonce": "0x5386750f4c6d399c30830bc32ad71709734564698c7fe713f35ed834ec772c67",
    "signature": "0x938d29700ef786bb5d3d809733262bd249cd7f8f6223fff9a21e97a8067126eb569508f08de3a146c357d0b114d31dbd4883fff217b2129c24643af3573bc4fd1c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}