{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874050367",
    "entityType": "User",
    "nonce": "0xfdc00732d4d572af0966cc2824792f10173d2bc49d4cb0c1790c1ea6b3deb112",
    "signature": "0x443f47c6e498db410188776225e5cd847babc4c09df090d4e52e106d63175e6e003c1678402eb1ce326105dc9fb645036bd8f6202ef2f78548be71de4efb77a51c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}