{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280294",
    "entityType": "User",
    "nonce": "0xbd3e4607b609df9a70a28fe7ed1ec419e24a8cf10d862c527a8411ed2154443a",
    "signature": "0xd9dded9b8ac8e54cfe38b67b1f7e47de31bd3d918efa2c4615238b6be529bd5d7d612c4812f86ab8e1d777fa33b347c0f4372ba48e99b5fa8d088486a6dd2f901c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}