{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xc70de72da6752c0356b02e1277ebc1c56a7db6016e55deb8df235ae25cbe8afd",
    "signature": "0x7066502416cf564f0f0aff53ee0e99aa935c036125996b9d57bd5fedbfc4f77b58bff6a7c01a413ad0e613e691e9ddb109fb0c60a751eb728f57a8e5f0ae73b01b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}