{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "462352719",
    "entityType": "User",
    "nonce": "0x72e5b00e76a4ce7abac38c07e90e61cabe81716e06fa00ffea5eb1b8c1f4d58f",
    "signature": "0x8585a301baa4b9c633d71a6f6b486ffb0fc2ff10133e6bad76adb460921af89f3e45bce9eee461e42126408dbc5de5ff65b50ba73bc08745e402ba1bf95b01b71c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}