{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc1e5b53d0e9061a454d690966c72d14da944f1aa70f26d3e4130bc9178c41fac",
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    "signer": "0xD9C67268A1bBb71815E452a7150B823fcad87151",
    "userId": "704077812"
  }
}