{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0dd68cf42ba705564fb7a4ca9953653365d772e1832b7c66e1307fe8a8d3963e",
    "signature": "0xc6a98a5451a865192d731c2b90ee21a13d9dbf44a99b51591e7f8a0c5a51ab255826af455e42279c1ec440dca593f151076f3ad5cc5647bf3eba8af9cef11fd31b",
    "signer": "0x028de6b731736399C80a17151f6E33682D3ACE28",
    "userId": "13214151"
  }
}