{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbc0a0bce371a8ca9336beb0ea171aa77cb5ebd493b5664a9fa88869bfab4d602",
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    "signer": "0xB30a4C7798fD53b9C0798c5AaCad517d0faAfdDe",
    "userId": "113464573"
  }
}