{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393620456",
    "entityType": "User",
    "nonce": "0x52044d73343d94ab751ebf06d76a704f00ce02152d7e244e31c5991e8a04d48f",
    "signature": "0x9836e2d4e5e8d2efb56cec00b81468a877c97b344d32921ed1d4425bd26be5b311a541d20b078b87f45bf9fdfdfbc5c3625dd67b21e931205afc7a7b5b3d4a241c",
    "signer": "0x8634164AAAb91c9168AC0B97cb004b5a43256245",
    "userId": "136500457"
  }
}