{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa2974016c686098cea156d16b6a0160de6a548c5a2e00f214c631d372a590be3",
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    "signer": "0xB01CAD1410aaC54c587fC04df58F9fe8195BA5f7",
    "userId": "55079885"
  }
}