{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373987581",
    "entityType": "User",
    "nonce": "0xcf95ed422fb04942eab84c3dc383e337de9da99f5e969a0803e61cb3b8441381",
    "signature": "0xf37c30329a7c061872e12e8b69460fa00d5b38dfcbcc7bc1ed122d34f78422bf20f0498d38aea053494f5f52eedf941d61c0d1869761fe22cb0da1d86627b3a71c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}