{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a82d4e762299f8bef4dfa48de876d0558d2577868c6d91ac983c271e7422164",
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    "signer": "0xB2105f4c1A045E39D35b24CdcEeA28B4971bdBfd",
    "userId": "819035233"
  }
}