{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405466",
    "entityType": "User",
    "nonce": "0xe04fc0d89456d0c719a00575c6c99ba7c29763f95d5174b1b75ddd9a3af4fdbe",
    "signature": "0x9416e8c4c58a48fd83dc17be339620f320daf4da579dbeab5910b4eeee9296e60a9eb0fa4b4f626818055f0812cd9732f7df16383a75864d5180204780d344921c",
    "signer": "0x789F486f6C0BEcF3D1E3B3D82c61D526Fc7Edca6",
    "userId": "57299423"
  }
}