{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0x6e63ac456819d85e7e2b386e7d7b4d0b868cc53eee17d4fd3dd41687d6f6f8ee",
    "signature": "0xdd85e7e359cdc14e8839d24d43f0f3c66ef04244a5538aca65e77d08405838717875666f2ab50cfdc89a402584e140f5fd0662e14562bd68d25ed4fac4b90f781c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}