{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83a300fcc1b07416faca4636d0a05c6f9dccfbf29e22179fa2c432cd3dac6802",
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    "signer": "0xBEd052148865fe7f70aa0B2c04705BC05e77D4c5",
    "userId": "490321291"
  }
}