{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x0aa529b59d72f7dd28ac77f3c6118fd8d113c9a04ae7c8b3cabc2ef03e4ad006",
    "signature": "0x339ea698582a2648ea6c47437a7a5f1c4b1f2ec30319931c8ae3f2b8f5eaca0f21529e1b7f6b90acc68e8514be298252b8ddd8ba05fc3d6a907c9094a660e1861b",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}