{
  "manageEntity": {
    "action": "Save",
    "entityId": "51326",
    "entityType": "Track",
    "nonce": "0x5546575b0d778f8c294b589ecee3c5b6bdd7ccb4c9d03a3e1fd0f7976324b95b",
    "signature": "0xc6b064df868adf852ccd9b2acd7a41760092ccad3934a37459858e5ca37c200a2f6b8122e33f5185bc02e6430eae4371129591c7cbbb56ea7d0610905f5741731b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}