{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0x2099f9c662116daa6da9a112cc2f78f552b46106d8f34f75e3ade086462a44ba",
    "signature": "0xc9fab8b27e8a850fcb541753591d6a8270649afc090096602f78bca2e29d80a846ed5b69c1fd24718370ee9bbf69143c42bd3605c15f590ec5149b6aa0a566cf1b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}