{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe4c9edd2fc74ebb6538975b82e0c91e8511454f47d2b4da9c56e0fcc5018f340",
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    "signer": "0xC6897930bFC572ae5E08D84b9a827638A4431A8f",
    "userId": "499274866"
  }
}