{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601",
    "entityType": "User",
    "nonce": "0x4542046dc0852825c0e2534d8e1ee366659ef4bf49f16a6a024781427e0deeae",
    "signature": "0xdba574a5607c64c0ac646f5ffb72c61a55c9e9de1434dc8828648a0230f5d2e313e6a7bd7f7fc9d4057142a85c13dd556d94f15fe9a84d7bc67bc39b3c0c5de31c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}