{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8728af684c29af84e4ab0298b96f81736d6afd9a0f97db7d7d5e38a58406f73c",
    "signature": "0x976a3709c3f8222af738855856a7e923eaf451c99c039c32c2f46e1bd601a7c722bb28985c21aa5eb770252288b67b40ae570f66eaaa236862bcd1fb557c77ca1c",
    "signer": "0x1945f8245174CF73ED3856cB80b9F9234421d1b8",
    "userId": "502203440"
  }
}