{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0x3a8b0f6c262163736c4fabe98554d4ce1c2038ddaab3751408a320506830ceda",
    "signature": "0xbb6f97081ef2d3508867c783891a0993e057029c8cd9748110a2ef8adcecd0bc5f5b5108c79c6c835c6749fe9a2d93c47670ce8a222a735fe735933da5313bf41c",
    "signer": "0x647f7C07Bb90cCeC21Bbf4C1Ed89df3Bf5020eF5",
    "userId": "879984932"
  }
}