{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x4ddbadad66b0920aad94b6599a7fb9617fb3b3f74b2d0d0cf02c74f40196b750",
    "signature": "0x642ff2320fc7264f45096d102599fba3deea664ac38c544783a5e7a58b193c550caaae73286510e9079bad854393cdc492deee3b0fba0a25fd23d3fd5fa0c8821c",
    "signer": "0x7e4a5037718B9Ae6Ee00dc6C5dcEBd04e956C023",
    "userId": "724340890"
  }
}