{
  "manageEntity": {
    "action": "Save",
    "entityId": "1001865",
    "entityType": "Track",
    "nonce": "0xb11a9b5f5cc7020ef4f85184386bbae475fd975b55d67c4b328ed104d8ee32ee",
    "signature": "0xaac7e70ef44e298cde77fb0b552790e8d66b99794dcc94456ef970f8386491341d7c1e8ff9f389b35a63b383d433cbd208db250b22a3b5d5e22777fcafd323c11c",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}