{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xc9a00055d4e7353e02d872884bbde04fa687c40750e4f57008d8da6ecd27ba54",
    "signature": "0x7cd308d5cde90ff72d7c299d4d762cde47d980d3ee1f8170415a34e4e41d9e332da767f55417f8786d75621cb7f841aaaccbd97eda15b032a622a5efcf34566a1b",
    "signer": "0xE69EE1e71C27cDfa05141f1DCE82bF0231AD05f1",
    "userId": "933842159"
  }
}