{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "539948653",
    "entityType": "User",
    "nonce": "0xffa8c94cbaa981d07297eebb5025d5359d3787ee964d489bf1edea7c406f5876",
    "signature": "0x7f165f3cceaa34218ba21d00820f8f5e5ba9958496f8537569b9685e2d73cd9e65dbf694d4876725fef246f8552a1f757b5285e52f031be87ec3d8dc3c31646c1c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}