{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370605",
    "entityType": "User",
    "nonce": "0xf3de628bd8f087039dc366902c7e5816b0315c0c7299a30d925caa1e4fc7bdd7",
    "signature": "0x715f9416f077920c41d5189a832e6a4e575c499e602ed932649d57744b17208c1998f5538c238a7ee81ffa9f31b5acc5510cc984814eb712ce9ee3dbc2fee1371c",
    "signer": "0x4f4C18220D065b5195F09E23993B70Faa751F0C0",
    "userId": "583021207"
  }
}