{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x84c7e1969b7ab005af84a1548e690e0ff21155ff186bb81b6573f620449a28ec",
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    "signer": "0xB213b3DA06f9FcCf5Da8428B279EABF5143f387C",
    "userId": "157615173"
  }
}