{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354034",
    "entityType": "User",
    "nonce": "0x4fdf63e92ebb568c3e3cd626a59ffc3936b2fa72de60f94bfe77da49cd098f09",
    "signature": "0x16729591336b540a40fe7a761c6d054addcf0724880e3eb62d04e8fbe4f6f3c91cecc85157945d38fdec70c893d9d7c719dc07024ed4790f19750b49de21fac11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}