{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xa3621737e1438dfed0740f62c440ac7dd813dbbc262069efccdc02f5ac3e2e8f",
    "signature": "0xc96292ca835ce3666927c1071529fbc8c4c4a48e646db993a029f299f2cf3b503845796d42d0fa777a19abb49497716c75f7da6e6556bf3f50e968daccd9a8d71b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}