{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993009711",
    "entityType": "Track",
    "nonce": "0xb61d4fed2db451855649fcf8b748adf2e653d0d954081dbb95a822e0df0b77a6",
    "signature": "0x6ce1f474e00ad59877683f0001ae93ca5fa4ae7aae9c3eb5687b7c7be5a71b3227bcdfb6392342b0edd76cd0fcf76a0920d233777c5ffb0a540c67a3f77b3c551c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}