{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556741",
    "entityType": "User",
    "nonce": "0xd54035ef30c0c9d8fed24a5999234abf38bb5009786b183b78f5aec2426476d7",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}