{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0x5c90fc7de2f7a2d2d05ea3197c19bae96ae1fd019c9efe70768c67ecd96eadec",
    "signature": "0x868ce48eab71c2946ed1da1eccdfbb93e2dbb726decb610ecc350e7b5582ef810d1c945cd067e645bf386a01c082f428147e0b36f592fb272ce1ef400560dc251c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}