{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303723",
    "entityType": "User",
    "nonce": "0xec320ce7b353feb381eb0e37e1034cfe005794232de01d00e0649a4954bf669e",
    "signature": "0xbe992cd57a4147feaaeacad9663b1731ce250d2bcb31817536a0bc17b83e17427d878bb0c2607a5314886ef946e2f426d69f2a46e1863204ed6bce7f25b13a671c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}