{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939139241",
    "entityType": "User",
    "nonce": "0x712e5d2e2652b93f607d3ea73e9ff3308b6a86ac0ac2c1e0c9a032564cbd9143",
    "signature": "0x50941543aba1c2ef2cac0520af80b1623365f162018d426cebeadf5fa2b02b6d164406444c4dcd18ba049963f9ee3aac2aaadfc15ea5401c11d17faec0e3311c1c",
    "signer": "0x679042790709288023727b8aAB8043541aF0F29A",
    "userId": "602782067"
  }
}