{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x468b27acf732a8ff3a7417d1b062465277f532dd5ae1bd2ad8d24cf79be896d7",
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    "signer": "0xC674238B87b232dc2a03bD24e827257D4A9f1cEA",
    "userId": "326124312"
  }
}