{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16e5d93c01d8ec7b6990e20c5638f240b997e8e1374887aecc91d5ac73be1e92",
    "signature": "0x270a332202b3b5a84fd309fada9c2b2035ae2cd755d7bdd7ac7a66248a9272ef1cf3928a3671f8b6e147d2a6fde22bd60016d19c0f9ae49e99b7d3b06df524041b",
    "signer": "0x555B4ba8E608363926eC316771B2408b8d518eDE",
    "userId": "125031751"
  }
}