{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20618",
    "entityType": "User",
    "nonce": "0x071a9195d0ed775e52b8d7c820ac4e8bb5c7117bd1e3296f87adba8cf2d565ce",
    "signature": "0xf9cd87f3d03cf28be6a2c623cb2f243ccf66f19363b109887ab98142611eef6848169ecdf216f9201461ab5caaf1925f6e9298c7021ee453549eb303cb8561e51c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}