{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x32090c03130cf45ec8bbdc47db1217b469b84c81133078f53ac80933eb358cd8",
    "signature": "0xbcdf6421a853d63fc7982733fd383508d4c354b59b568a6d2965283f102ef26f4b2ec9574d76e6e877f0aa3fa6b7797960ad168be6cff1ca3c4cf5d7ba5d899f1c",
    "signer": "0xE54C9A93478469Dfdc87a1bE430c7350001E0829",
    "userId": "124240357"
  }
}