{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcea7aa6b92f4f4bf353048ea6f4c7cc989d1345ed6ae7de3cd2683f98360e4f7",
    "signature": "0xc134e289ff444fcca11092928e73d34bbaf8b4a4a31a5dfc0ce24f0ecd3979eb12f90d7fcbb2089b650bf908a20552380d9f12264fb159dc1843deee0cfb67801c",
    "signer": "0x89a6B1a1b823105476fE21123fb4A43700e8cf28",
    "userId": "172581848"
  }
}