{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x78fd9a8071f43aeabf5d55cbbb28a2a18aa59124776455ed4d3a50caf56939de",
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    "signer": "0xBc0f33a880000D4C11d5414C86c3Cd981c1d1fF8",
    "userId": "904870618"
  }
}