{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x67a2c333e0c2e81a6eb537388b7094a06e196d88ec11e0b608d0e99c5e0ad14e",
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    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}