{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837551221",
    "entityType": "User",
    "nonce": "0xc18a5f3b411f44b1aa51cceeeb249f33d6e448dca98554b46f6803086e933dee",
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    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}