{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "610823165",
    "entityType": "User",
    "nonce": "0xfcae6c35340f61227b222126680c1732087c3e6f716f31d91d1fb7ee63781a10",
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    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}