{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd48004fdf94f5394a5b30bf524b47be5091790eda644b4d23ccaa48a7d2b277c",
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    "signer": "0xD1ee185A4D0DADa204Be95e503587fA357d65D02",
    "userId": "199847019"
  }
}