{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124241",
    "entityType": "User",
    "nonce": "0xaf74917bd6bffdc08205becf5d4aa5b7c12758be9b47b55bfa89ef31c61db7e1",
    "signature": "0xf180b274633f3bd73128cc543f2dd667d2c3b82ddd00099595df55bd3cd240c16e27f0144982c4873e478762a9564b6f6ae523ae6d4977b67df478dc295cd1961b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}