{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x654ba389d39137be95a5cb25b72ec2250394c614a91483037cc281473ccd61ef",
    "signature": "0x713375452b5dda5a3473e638576fbc4d2bf0ee786ac8d0b9ed3ad2f563fb3e67598842172d17a6fd6247a20c41a572892c01e65151f7d3beafc9020076dd1c951c",
    "signer": "0x51E08E74E29DCd09DdEeF4713C607E308bcD0411",
    "userId": "123102876"
  }
}