{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0xd7e1244678893c0b35198b34d5e4e93816f02a74d397d6aed06fdefdca93dbaf",
    "signature": "0x21d65e94608bc53237adfe58966654283a3da10d54f1137786661166f0374b0b26164a423f00bcd70ebc524cc88bf8bc12d1bbd8d0b85ef451dc7d78b2ada1001c",
    "signer": "0x5556f3112F03a658Ff1522aFd09D44a9a8C51a2f",
    "userId": "156266332"
  }
}