{
  "manageEntity": {
    "action": "Save",
    "entityId": "523171328",
    "entityType": "Track",
    "nonce": "0x6036434fb93e2a51b63d367a4b5b881eddd98ea3ac0fdce94071f31d53f1d8c2",
    "signature": "0x753a2208c24e59288a09b69cb1a0ff6b68827ae648db0f43b9deb31609adf3952bf92976963d81e0d519571e5b10f03fce0d882035f714e781c95ecd051c00781c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}