{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbb62c79235450df9cc40f0b0b48e05935f77cab33b7a76b822d862f47269709c",
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    "signer": "0xB789849868c25eE93eC72F5F2Ccd07456cfA6c6a",
    "userId": "52741776"
  }
}