{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339449",
    "entityType": "User",
    "nonce": "0xd6002a9975af1f7ee71bd54d86a5a8b93488f853fbded855c51156b969d28676",
    "signature": "0x45aeac5acf5dbceaf19379322d09865dd055c4dae2416a9e79272a09673b15872999b50f74809e24bd1948553b226fbce9ab06da0cb1b044fbe59a27453b6fe71c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}