{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "894327847",
    "entityType": "User",
    "nonce": "0x835f828965c02436a1a8faf412055e59f0458429bb6a5acc860699beed7e04f6",
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    "signer": "0xE3CdfAFd2999c1C06c139E932b0515a9F0B07382",
    "userId": "29797210"
  }
}