{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1994482",
    "entityType": "User",
    "nonce": "0xf104acd8e51d30eba9a203125feeb78640bf7e0b074d2b6a99d2d393b5cbf9b9",
    "signature": "0x9f616a9e0c7ab3887eee58b2ddf6eed80655968f7a7f38f0b4673c0ddf93676248e0742d4c1aff9ad8a494b4e7d6036a31a89a7d438241053fa2329ae1b6b6821c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}