{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3288",
    "entityType": "User",
    "nonce": "0x545ee6592dd235a910445e9f468e4d52cb5343c2811add1a5076525b6c90a20e",
    "signature": "0x6ef434d8e88b04f9e31db384cc43db36c9775f21c600db992f2fb4240a989b9e368b7efa4f66abdedf91d6959a585752f816bb2bf696a1db0332537f9669b3331c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}