{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280938",
    "entityType": "User",
    "nonce": "0x77ed42d0954ada011e574d87bc076d2d6712d721f8c9b98875f8ef0380feb4fd",
    "signature": "0xfc297fc5b6970d3f08f67d6108c57f9acf20832f44c5453beff2de4d2150bdf15616380f93011f8b8fa749fac0a03fb849b85b5bbfa1680f060d1587fe5a52351c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}