{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6923615f80375a994014c767983d3f8000874869b3589ca7a554f3e77814b0b4",
    "signature": "0x6a03f82d0e0d34169ac577b79fa9d3f50980e8be0c488840bbc80ee01266cadf78577c92d70b6685d66c9c8de0a3ed55e3ab1c55cd8ce550b81229145517c0121b",
    "signer": "0xC4f7093db762DA4fA9F57814A12364C96C1E97fF",
    "userId": "669812913"
  }
}