{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3144",
    "entityType": "User",
    "nonce": "0x4c600dae6a2d4e1b200d43eeba6a34ef214c8c6b293158cc997b387a58e3d74b",
    "signature": "0xb721b9589674f54c5f31cd9d2f59738dc5451424de71d38d1e1231d49ec98d3476face214df199643eda66c38fdde8f6e3dbf6901c4b3525871eda28b5bef8ad1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}