{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2271e1c86c7496b4517253280cd85012247e6b75100a3c055403f574619272a3",
    "signature": "0x01ffe838798b8a26638a72adbe6d3cd6023fb9caf29613b650695e81a05cd58f72465f1fbe4ba0896471f96a4f083037ae47de317d29682bf70b98d17182c8611c",
    "signer": "0xb1202aa99a03fF5938602E50F754d4E044689cB2",
    "userId": "975349976"
  }
}