{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6f1ab85b9dc646bfad5e5d2b576376fb5b689eb308d9f05a8c0b0bb5b90667ea",
    "signature": "0x9c48c060354323ee93ea90581f0e5d424ec2eb4aac5be71f143dc0315bbd90bf0b44c84a7459c46047a5c4b00b18d9e07e1791d300fe403ca3b30cbfae78eb2e1b",
    "signer": "0x6412dD6C1d4DEc414C66b7993E45569FB3da48D1",
    "userId": "572066471"
  }
}