{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12579",
    "entityType": "User",
    "nonce": "0x9ab4b1e957c7bc18e6e2a258ba51d4bbf220941e01b3cc2b673d0336838496f4",
    "signature": "0xd16f20bc1fed6ba57943c856c197013f41c7cdf1070debb3faf6947e7b4239732ae2dec51076313aaddda1fc2d7f4a15239fd189a782e39dd41a6fb67795ec0c1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}