{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x945821956b47726ca1e4034339ca2708fde8f01c7abeb20f101803cfce05365a",
    "signature": "0xe87356662a6a7b5430b1fab913a2f0622e430dbc7b5ecf8dec30ab6e63fafbd76a21abeffedf87e9511bb77bf5712d55c2ea6ce99689bbeec871e26b40d932841c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}