{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771917742",
    "entityType": "User",
    "nonce": "0xf99f012b930c826972b7b29f9632c8ac75d5f584b2d90f8d0d4304297253ed06",
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    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}