{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "327460497",
    "entityType": "User",
    "nonce": "0x543ab6d63cd317c6e958ddfcec403f0a84a88ae43fddba22d147efdf6b930520",
    "signature": "0x34823bc2f80ebbd0c054da7479211e454aaa1244d444603e6ea32b9416ba0253137ed3f836b6280d37bf1f533b0edaf38cc9bef08d3cb4050b164f450ffb49461b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}