{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780083254",
    "entityType": "User",
    "nonce": "0x12ffd847cb5d618eceea6ff159d99c4845481fd9043f3ac9468b0e811d496f9d",
    "signature": "0x300772e53f5f82cd8bc40cc7a7cfe614ec33801fe948f1eed6d0f479ac418f59345ddb527a402d6f7da82ede8e5a2d0cc9ffc1e4746a5643b4a3c76b36f193191b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}