{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa75e55b2584ac510139653797303128c458b32fcee85ec0cc50a817ae8a5690c",
    "signature": "0xca86dcee8b5139f8e0d02636e140d32c70f07e7b47f17d83d31afc1666d21743043a3dc178f21d1c600e942ce7b64a0b67981d214ed2043cc1f568f58558d49b1b",
    "signer": "0xCa5300344784E98825c51Dc51E297AF0185a0F6F",
    "userId": "278366449"
  }
}