{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x99fcc973eea287b1fc09a1a94f2f39bf14129704f0b673477a2c9d9786ab8fc6",
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    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}