{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "858479840",
    "entityType": "User",
    "nonce": "0x4cd7cd0f4a91a950a2dc4fb3191ec4b87317478b1a117a79674bb0928eda28cd",
    "signature": "0xba0e5c72f63ae19a77d9836b23e142373f5a2d58a321fa3189760b3439e922241607555852bc1a7041c22a5f5eb15eee9abd6203f57ae6185468487e68594ae61b",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}