{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc62d47d8860653ece2704ec202923194f435a17c1ad93bc6fdeb88422af88bb3",
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    "signer": "0xB5f484B2572C82B0a09b05912803Fd6151d3B78c",
    "userId": "205408122"
  }
}