{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x265b271982f6bfb38e1817707aa26bd6ab894d28d4cf4274d1eb913677d59855",
    "signature": "0x14b6ccb153b803037bb36a2cea013ac47d74022388f07503de4348aff2d4aca33bb328d60d8ab0a72d8b37ec12ddadfc6de8c9365cdfb1b3f9e981393871a42d1b",
    "signer": "0xEb5CAAcE54E2A28dE521238663b8485d3347A46A",
    "userId": "203621449"
  }
}