{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "950992991",
    "entityType": "User",
    "nonce": "0x230ca5d4b51479dbf812a56e9522b3c7c8fd3271ce093b1f7d04597600fcf482",
    "signature": "0x523c8c9142fdc671fda9dbb482e3c9938fd2bff580ead845a95ad09c852c3a3b5a8d82564a2160f171f00e1c34211e15f08e3e397c7e2d32b38b38b9583e3d6b1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}