{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3bf5ce4ed3d129cbd4ac7c334220a0a5eaef960048183420552eaf37aede8da6",
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    "signer": "0xB440ddd46d6951DAe4d5dE522cb611f68976E0B9",
    "userId": "859491807"
  }
}