{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864400174",
    "entityType": "User",
    "nonce": "0x74efa0abe737d29baa1e1f94c2c5815c9cf1b93eb634a9b9b747b4955b0a9983",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}