{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405466",
    "entityType": "User",
    "nonce": "0x176c6b38bebeabfdfb08cf64db8ac553b6f4c8180054345e593dee24eb2d1568",
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    "signer": "0xB37e68c133ea69671cCAC0650D43A5e87451094c",
    "userId": "513109515"
  }
}