{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa8c80f869ed4f78aa2d6381a1d2b1a1f80173fb1ed5f323a6a504961d57c6886",
    "signature": "0x71f9e92b9f4af63b486e292aa8fdf5ca2516d7e70e5de64d40abd39c6dd0104e6227cddf4319ce63f218ab23babf3c859eeb36f69b9c3fe51c9dfede468de3fe1c",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}