{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21357518",
    "entityType": "User",
    "nonce": "0xe87dc735099115f296580a7f785a2b3cd63b47df822551121f1bfd4d573d0175",
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    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}