{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444781",
    "entityType": "User",
    "nonce": "0x2fe238a80e93e79500976a774ed31accfa0f452f965384aa7c65ee274ffde09a",
    "signature": "0xc5ec9ba1f6996f8a6896c4ef2977349faabbf85ee3d53a7fff29ac148ff6c6e630780332670b726e218c6f3789a414ca04b980b166b48d4726e65f50f08044c21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}