{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3537",
    "entityType": "User",
    "nonce": "0x155427a41153a03572d792b0645d6fe4b50bd351323591bebb1abad511b0f833",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}