{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1913830",
    "entityType": "User",
    "nonce": "0x4ba3e1d36aac23c89f7a60a8c1c8621f5afa9150b5b43ca61eea4af14684f34c",
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    "signer": "0xB874f4621c8c59121feacEaD49e379Baa95ebC5b",
    "userId": "480497000"
  }
}