{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2113",
    "entityType": "User",
    "nonce": "0x50588a8d9b75f4d527b457a71f1c072d70d86249539bc06316d181e0e36deb5d",
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    "signer": "0xB874f4621c8c59121feacEaD49e379Baa95ebC5b",
    "userId": "480497000"
  }
}