{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ed21a43a65d272d854d477732464204bf9ed81a8f8e83ef650d77745fead5d9",
    "signature": "0xf4d67666156d9f48764ab8962a3c12f3bf18d1071d7979409d25ab7a6e8b43060a93765e4f8674b5ec03f2f2c5b4f0e5b04bea4bd7d1d9a43298956435f8bdf71b",
    "signer": "0x46c40C752898Fc7F4F7d6b348FC5438aE9f971aa",
    "userId": "84235345"
  }
}