{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2883",
    "entityType": "User",
    "nonce": "0xccd0fcb858a6ae2bd2cb69f041cfb8e3d65f42c053c84c7e52963b36af0a8919",
    "signature": "0xbccdc0b3978e6548f0d76c5973c21da090f667cc7768f7b84a0888c5f677e3be52d479671bd0504bfef6e540b1d30456b75ae2cc0137e19aed06c6f728ad7d2e1b",
    "signer": "0xA262fa1E6a4e2d4fD07d405D0572e986156e8e19",
    "userId": "16238"
  }
}