{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a4c3484c040e54a13b75955d57a5c6ad509f12d418c684b72e4f32d8e48e0fc",
    "signature": "0x7f59ad8c9ec41c28b5689a46c5c6cc3a9c84edbe2306d8c4e4c55d9ce60d4d2f303dce17b227ff70681ceffa7dc7328f593507d75e18ea5dacddb5b4e61423251b",
    "signer": "0xFb4c82bcE296458fa99Fc6643604df291Ad7E3B1",
    "userId": "752746307"
  }
}