{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2577",
    "entityType": "User",
    "nonce": "0x9612cfb1012971f5ce37999200db434939def2ef891a8f39fd16971afb72880c",
    "signature": "0xd2490ecbd579254e3b0bd9db49f3d440281a18479deaae6c2318d17d9cead7ac3b71d6e6f333984d3cbf7f0871f82d61a8ff80948b2dca33dd72b7c36bf940ac1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}