{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57439",
    "entityType": "User",
    "nonce": "0x78302e1edfe3f8860b611f401e8464d8cbfc913c9506f2e998355d0df2694934",
    "signature": "0xb56d211b46411c41496588d60d23ab062ab368cfea7b0c11e67e80c5a266fb1564d5e1ec65dd85817a2fe8a952a5bfb9d729f2f3b9c2d4b64307696c622672e51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}