{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791801235",
    "entityType": "Track",
    "nonce": "0x7a71962e02c48778ec4092e4f2d663707dfb84219aed13bbf2e4136244cbe791",
    "signature": "0x1b497f8fee14ca324ae63e4cfff1b94e622a86c788db6e232c4960070f27c61e26e20b58b8cbdc41c856211316766878c49e40739aeac417874b537d6012225c1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}