{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200371",
    "entityType": "User",
    "nonce": "0xc93db521adc456840a8ee9204371660e6fba4a8f62f49de5c99ba3e6555ccb1c",
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    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}