{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a019d94344cb3f9a56d7045528b80fc827cefa6d4025a0dd2a225d42ffae0b9",
    "signature": "0x354990aa4d7b3a7a75c6b1e7de7578c76def83f05637898bc78415a40dfa4881621934e9e1b8bc7bd0747014942f56b6f3a3b4937db18863562e0b246deedda91b",
    "signer": "0x8619c1F590138c5D38f213Ce2D9589925968bAF4",
    "userId": "579560512"
  }
}