{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0x1a510dc2aa682cc0f59e65c4d5c3d03b03251a17f560777dac933094cc3f631d",
    "signature": "0x33f058d8fdf5ac03cac66b8fa04f97c29cf2bbdb721587d924ca37c188c0f9cc107c4b0648a9493ddd16abfdf037556a7573fe605f45cd0e77e12562bf06d7d81c",
    "signer": "0xf2A3959FD8c093454867658F3230042b9388B84B",
    "userId": "387870391"
  }
}