{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbb618f3095cdc5ffc6639189a0f2c71974289fdad735ca2d5678bcfd26fcf2a6",
    "signature": "0x4c0e5a71af9e0b3993707abbff85856ee900ff5af17638cf6b7e0c9764d7f8f17121a57807cfaa63a06b559a6134e287c54bf64cb08b53733e265b41624d1a501b",
    "signer": "0xA5a0e444011ce9fcDBC71a489D7d83822E9F510b",
    "userId": "401233116"
  }
}