{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774209",
    "entityType": "User",
    "nonce": "0xb83ff9fb7daf97a0d9934c03d753be9c171c64190515191b7f4ba8f83a6d4438",
    "signature": "0x0afa4bf4668fde5d3ddb752a518bac503be70d0cc67f64407d6e4c8dfaec89e150a14d2adb23afb012f31ef4d4e2c86d6c211462e944a4785b119c3941f68f8d1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}