{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344587",
    "entityType": "User",
    "nonce": "0xe6a9296ea45c5e3bcbb22e3f253caa968465b880c16a5efd66fd1197c6691071",
    "signature": "0xd4682dec05e13b099a50713f35961d5d95a19fce4a230e30672e7323fba9eb9f2fe9f5d0f395b914d6b7d766641429bd5b392e86201b5331d4d7eb1d2f30cda11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}