{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0xdd8ffff489f9afb0c485192b53e4d6e162eae683069eb394b1403118a78be42c",
    "signature": "0x1c7a087b26d100116db692406d0b3c7a29e23acf0371f3b5c02893c669309ddf109ee32052fdb0ec713c4ff13dd7d35f92b8ccaa56bdac90741da5680604be301c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}