{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831499615",
    "entityType": "User",
    "nonce": "0x7c0be6b7636e4d654d8041447bfbe7079469e0f1befe0cee1b0fa44df5623f6a",
    "signature": "0x6a0833ac328776a83b4d39f223a26bf0dd57a60266d4b24c9402bcbcd4e6562e0f0d8afb937a048e3b4a915177dae972f0020ebbcbbc36d0f48476f9b19742e21b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}