{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcdcc5ad501a3fec08aab384389eaab562893dfa0560594783a92245895bb136a",
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    "signer": "0xD3307826b0a026c5d0B73f0A1620D529c36d11a7",
    "userId": "35353422"
  }
}