{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b11cee308921ed551eb9f6d50bdcadb2977bddd692dfdfebb39d00335830610",
    "signature": "0x6fbc45b007f83c57471af1e40b7070e19846002afd669fb36cc2a6356b44bdc11164eedcc07feb5af537417950fc8dc0cd737f9ba08688c4f02aa4e4674d5a361b",
    "signer": "0x45c372659741cFdb7A44Ee15796caFe53e42a6e3",
    "userId": "220501283"
  }
}