{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53598313",
    "entityType": "User",
    "nonce": "0x6fefcf81e168b7900d2053793531e2462a1228693e89ebc54d1a45f8700bc7c3",
    "signature": "0x8d4d49ec1d1cf11790894d116de19a9b6ccae384554563624311c5cd0a95481d57af143397341170dfb685ebaf9502ffbb847c5330f1d4ca56dc92747767a5011c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}