{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "619950545",
    "entityType": "User",
    "nonce": "0xf1c68790d18e7e99570575639289959f88b0a6ee1e3079fd87ebace6a5567f8f",
    "signature": "0x17c167cee7a06323dfd8b4b098c04a59472bc31401e0b4e301cd29b2fd761d6b1449b08215d777e835866e557b39ff76c87ce162b7bdfb334c9b007340d74a5f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}