{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "884071071",
    "entityType": "User",
    "nonce": "0x649712f697a869c6ddc8768066b69c83e5398f253f3584da7cd7884cdd3fa8d1",
    "signature": "0x103fa9e0552160f8c1813f0959e50c9e232131ec052b33f950d872e33a50d3c871b60326e6fd1bb82f997f29925d08a63d480b8fee5bb34833407ce7c59fca2a1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}