{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10678",
    "entityType": "User",
    "nonce": "0x8c3dbb461fcea3a7d72c068fe626b1d4c69ce87087b752067d02d899c7c0cf25",
    "signature": "0x93bb2eafdce385cd04758d30ae7afff85bbeaf1e37e985d1a3e36c92048e1c57721692cc327b1cb95c43c3be6b9fce8b18fd72f4c562e1742b2356dc4895cb261c",
    "signer": "0x57D64A47c0B6C0789D9565B3D90270Aea276eB11",
    "userId": "199258"
  }
}