{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129439",
    "entityType": "User",
    "nonce": "0xcd47f3f73bc59fb4e1d4829a1a3b3920dea884e91753d26216fcec898e7564fa",
    "signature": "0xf8f4f4a8813f9834687689baf0d118f3588fee30d12e0e6c6e6d792dad400bb408e19e5ee08d9bebac922b998f77c3a3dc46b5df9efdc869a33b6e27884bf7261c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}