{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0xfb9a7bea8b6ea5f151dcfd3685a3a91724883ec92fb242e57ab53a9695efaaaf",
    "signature": "0x34aa8fe75a0b05ae87f096caba2e1c1581c43715410941cfc6734b4fc9845ee1393e3e034440241906adcd102d9c080b920a9d9fca402dfc2de16b61e80fd3d11c",
    "signer": "0x734a00137DCDA6aA303E1be6dBD3f9F1B9a989A9",
    "userId": "293311836"
  }
}