{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad67dba2fa4a110b7d530e117bed39c8a915cb593a5b9862c2afa5cbefbff874",
    "signature": "0x2f1d423741d71183a2ca4eddf13c16772aba544f6ae7856271a6212d2e7fc44d3866dd8b0400ec8fc02c855da9a77da178eef2775b24e14aff30d3ab50ecdc5f1c",
    "signer": "0xCa6231E3844BC6373A95cFaC5a12AA01873e9278",
    "userId": "143885179"
  }
}