{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2ec67e41e94c5e02e662a3e0d0d7cd4295b1c7fec5bf694e5e18a5b42f2f73b7",
    "signature": "0xea9c20a25bc868f76c70266869fa8553ac8852f758e23a175c60eb99152186ba5c3548dfaeec7ae5f12f04219a5744eaf680bdbb857530ef7e39c4497f5daedb1c",
    "signer": "0xB8a4a55a854754893d331b37B94185061DA9d5B3",
    "userId": "530967904"
  }
}