{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909603442",
    "entityType": "User",
    "nonce": "0x0c520e4d316f889552c73a1e505177f0998c121bd6d15985672e5570415576d0",
    "signature": "0x31dcb0fa51770a241f5260ecbc2c6293150a53273f3a0370a7bb25cdc53af8c92c197dc26b7d409462ed2eaffcd8e47bdbcc4ed8db405d1e0eb12163ed8d6ae51b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}