{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254204",
    "entityType": "User",
    "nonce": "0x3fdf62be44fc8981da8882c649de279c0a047525dc0483419d93ced24f7a5371",
    "signature": "0x1ef6ca217c44b2b06112d737308fb9cd44783df1f4416d04fef74397d9942f785d40971b204f64eaae7bc89fe741d9455703323fa5fdfb33b705c95702fc02861c",
    "signer": "0xB1DEa142b6c9E2e5781A6112858f1fA48322b2B5",
    "userId": "725523395"
  }
}