{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x250cf47c7bb65bb567bacbc1175174c904aa7e811559c77688005337338e841a",
    "signature": "0xb8b0150171a9d31a244b05db6339a89eb98900d5d5648fdb542cd2a086d3149c61a5dbf336975f44c04c274f2b35148f58643875653c40f6558df5ee550456a81b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}