{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55ddb9065931745c0ac8b05355cd65614dc80677e8e75f251638550d0142c818",
    "signature": "0x558e6ef48feda8d1d06b3fe04d9c78927323769584ac885d7a7a342da12c05d565496aaba0728ac76aef5e58a59c4a32ad3bc43d7cbefbfbbd19bdb9d2aafc8f1c",
    "signer": "0x3A142A3A7eD25C0818EFB5ebDf47d13B6D3C8940",
    "userId": "56708291"
  }
}